165494568 has 64 divisors (see below), whose sum is σ = 434471040. Its totient is φ = 52431104.

The previous prime is 165494557. The next prime is 165494621. The reversal of 165494568 is 865494561.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94630 + ... + 96362.

It is an arithmetic number, because the mean of its divisors is an integer number (6788610).

Almost surely, 2^165494568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165494568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217235520).

165494568 is an abundant number, since it is smaller than the sum of its proper divisors (268976472).

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

165494568 is a wasteful number, since it uses less digits than its factorization.

165494568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938 (or 1934 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 48.

The square root of 165494568 is about 12864.4692078609. The cubic root of 165494568 is about 549.0281106107.

The spelling of 165494568 in words is "one hundred sixty-five million, four hundred ninety-four thousand, five hundred sixty-eight".