195249172 has 12 divisors (see below), whose sum is σ = 347477760. Its totient is φ = 95969816.

The previous prime is 195249167. The next prime is 195249181. The reversal of 195249172 is 271942591.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413428 + ... + 413899.

It is an arithmetic number, because the mean of its divisors is an integer number (28956480).

Almost surely, 2^195249172 is an apocalyptic number.

It is an amenable number.

195249172 is a deficient number, since it is larger than the sum of its proper divisors (152228588).

195249172 is a wasteful number, since it uses less digits than its factorization.

195249172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827390 (or 827388 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The square root of 195249172 is about 13973.1589842813. The cubic root of 195249172 is about 580.1358896816.

The spelling of 195249172 in words is "one hundred ninety-five million, two hundred forty-nine thousand, one hundred seventy-two".