165044164 has 6 divisors (see below), whose sum is σ = 288827294. Its totient is φ = 82522080.

The previous prime is 165044153. The next prime is 165044189. The reversal of 165044164 is 461440561.

It can be written as a sum of positive squares in only one way, i.e., 104857600 + 60186564 = 10240^2 + 7758^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20630517 + ... + 20630524.

Almost surely, 2^165044164 is an apocalyptic number.

It is an amenable number.

165044164 is a deficient number, since it is larger than the sum of its proper divisors (123783130).

165044164 is a wasteful number, since it uses less digits than its factorization.

165044164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41261045 (or 41261043 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 165044164 is about 12846.9515450164. The cubic root of 165044164 is about 548.5295864327.

The spelling of 165044164 in words is "one hundred sixty-five million, forty-four thousand, one hundred sixty-four".