165017994 has 16 divisors (see below), whose sum is σ = 330359232. Its totient is φ = 54952128.

The previous prime is 165017971. The next prime is 165018001. The reversal of 165017994 is 499710561.

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, 6559 + ... + 19314.

It is an arithmetic number, because the mean of its divisors is an integer number (20647452).

Almost surely, 2^165017994 is an apocalyptic number.

165017994 is an abundant number, since it is smaller than the sum of its proper divisors (165341238).

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

165017994 is a wasteful number, since it uses less digits than its factorization.

165017994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26941.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 165017994 is about 12845.9329750704. The cubic root of 165017994 is about 548.5005926214.

The spelling of 165017994 in words is "one hundred sixty-five million, seventeen thousand, nine hundred ninety-four".