163931168 has 12 divisors (see below), whose sum is σ = 322739550. Its totient is φ = 81965568.

The previous prime is 163931137. The next prime is 163931177. The reversal of 163931168 is 861139361.

163931168 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 121264144 + 42667024 = 11012^2 + 6532^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2561393 + ... + 2561456.

Almost surely, 2^163931168 is an apocalyptic number.

It is an amenable number.

163931168 is a deficient number, since it is larger than the sum of its proper divisors (158808382).

163931168 is an equidigital number, since it uses as much as digits as its factorization.

163931168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5122859 (or 5122851 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 163931168 is about 12803.5607547276. The cubic root of 163931168 is about 547.2937783144.

The spelling of 163931168 in words is "one hundred sixty-three million, nine hundred thirty-one thousand, one hundred sixty-eight".