165493904 has 20 divisors (see below), whose sum is σ = 323644464. Its totient is φ = 81972768.

The previous prime is 165493897. The next prime is 165493907. The reversal of 165493904 is 409394561.

165493904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165493904² = 54776464522322432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165493907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46622 + ... + 50045.

Almost surely, 2^165493904 is an apocalyptic number.

It is an amenable number.

165493904 is a deficient number, since it is larger than the sum of its proper divisors (158150560).

165493904 is a wasteful number, since it uses less digits than its factorization.

165493904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96782 (or 96776 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 165493904 is about 12864.4434003186. The cubic root of 165493904 is about 549.0273763365.

The spelling of 165493904 in words is "one hundred sixty-five million, four hundred ninety-three thousand, nine hundred four".