195787172 has 24 divisors (see below), whose sum is σ = 412184640. Its totient is φ = 79492320.

The previous prime is 195787159. The next prime is 195787183. The reversal of 195787172 is 271787591.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183479 + ... + 184542.

It is an arithmetic number, because the mean of its divisors is an integer number (17174360).

Almost surely, 2^195787172 is an apocalyptic number.

It is an amenable number.

195787172 is an abundant number, since it is smaller than the sum of its proper divisors (216397468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195787172 is a wasteful number, since it uses less digits than its factorization.

195787172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368051 (or 368049 counting only the distinct ones).

The product of its digits is 246960, while the sum is 47.

The square root of 195787172 is about 13992.3969354789. The cubic root of 195787172 is about 580.6682468271.

The spelling of 195787172 in words is "one hundred ninety-five million, seven hundred eighty-seven thousand, one hundred seventy-two".