185164956 has 36 divisors (see below), whose sum is σ = 492692200. Its totient is φ = 58472928.

The previous prime is 185164943. The next prime is 185164961. The reversal of 185164956 is 659461581.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134671 + ... + 136038.

Almost surely, 2^185164956 is an apocalyptic number.

It is an amenable number.

185164956 is an abundant number, since it is smaller than the sum of its proper divisors (307527244).

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

185164956 is a wasteful number, since it uses less digits than its factorization.

185164956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270738 (or 270733 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 185164956 is about 13607.5330607719. The cubic root of 185164956 is about 569.9712266177.

The spelling of 185164956 in words is "one hundred eighty-five million, one hundred sixty-four thousand, nine hundred fifty-six".