195

195 is the natural number that follows 194 and precedes 196. It is odd and composite, with prime factorization 3 × 5 × 13, and thus square-free. The divisors are 1, 3, 5, 13, 15, 39, 65, and 195, giving eight divisors in total; the sum of the divisors is 336. The Euler totient of 195 is 96, since 195 × (1 − 1/3) × (1 − 1/5) × (1 − 1/13) equals 96. In base-10 arithmetic, 195 is a Harshad (or Niven) number because the sum of its digits is 15 and 195 divided by 15 equals 13.

The 195th day of the year is July 14 in common years and July 13 in leap years. In astronomy, 195 Euryale is a main-belt asteroid designated by the number 195.