165208164 has 24 divisors (see below), whose sum is σ = 420530208. Its totient is φ = 50063040.

The previous prime is 165208129. The next prime is 165208177. The reversal of 165208164 is 461802561.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625657 + ... + 625920.

It is an arithmetic number, because the mean of its divisors is an integer number (17522092).

Almost surely, 2^165208164 is an apocalyptic number.

It is an amenable number.

165208164 is an abundant number, since it is smaller than the sum of its proper divisors (255322044).

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

165208164 is a wasteful number, since it uses less digits than its factorization.

165208164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251595 (or 1251593 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 165208164 is about 12853.3327973720. The cubic root of 165208164 is about 548.7112127115.

The spelling of 165208164 in words is "one hundred sixty-five million, two hundred eight thousand, one hundred sixty-four".