163957172 has 12 divisors (see below), whose sum is σ = 288990240. Its totient is φ = 81388536.

The previous prime is 163957169. The next prime is 163957181. The reversal of 163957172 is 271759361.

163957172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146888 + ... + 147999.

It is an arithmetic number, because the mean of its divisors is an integer number (24082520).

Almost surely, 2^163957172 is an apocalyptic number.

It is an amenable number.

163957172 is a deficient number, since it is larger than the sum of its proper divisors (125033068).

163957172 is a wasteful number, since it uses less digits than its factorization.

163957172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295030 (or 295028 counting only the distinct ones).

The product of its digits is 79380, while the sum is 41.

The square root of 163957172 is about 12804.5762132138. The cubic root of 163957172 is about 547.3227154086.

The spelling of 163957172 in words is "one hundred sixty-three million, nine hundred fifty-seven thousand, one hundred seventy-two".