195 (number)

In mathematics

• 195 is an odd number
• 195 is a composite number
• 195 is a deficient number, as 141 is less than 195
• 195 is a Harshad number
• 195 is a lucky number
• 195 is a sphenic number, in the middle of the prime quadruplet 191, 193, 197 and 199
• 195 is a square-free number
• 195 is the sum of eleven consecutive primes: 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37
• Although not itself prime, 195 passes through Ulam's sieve and thus is a lucky number
• 195 is the smallest number expressed as a sum of distinct squares in 16 different ways
• 195 is both a 21-gonal and 66-gonal number

  In astronomy

• IC 195 is a galaxy. It is part of the Arp 290 pair of galaxies, along with IC 196
• 195 Eurykleia is a large main belt asteroid

  In geography

• 195 Broadway is a 29-story building in the Financial District of New York City

  In the military

• 195th Fighter Squadron unit of the Arizona Air National Guard
• Battalion, CEF was a unit in the Canadian Expeditionary Force during World War I
• a United States Navy
• was a United States Navy during World War II
• was a United States Navy motor minesweeper from 1954–1968
• was a United States Navy Alamosa-class cargo ship during World War II
• was a United States Navy prior to World War II
• was a United States Navy during World War II
• was a United States Navy during World War II
• Strike Fighter Squadron 195 is a United States Navy F/A-18C Hornet fighter squadron at Naval Air Facility Atsugi
• was an ocean liner which was sunk by German torpedoes 195 miles east of Malta in 1916

  In transportation

• Cessna 195 was a light radial engine powered general aviation aircraft between 1947–1954
• Ferrari 195 Inter was a GT car produced by Ferrari in 1950
• Ferrari 195 S was a racing sports car produced by Ferrari in 1950
• London Buses route 195
• The Embraer 195 jet

  In other fields

• The year AD 195 or 195 BC
• The atomic number of an element temporarily called
• Minuscule 195 is a Greek minuscule manuscript of the New Testament, on parchment