165649412 has 24 divisors (see below), whose sum is σ = 296217600. Its totient is φ = 81035136.

The previous prime is 165649397. The next prime is 165649439. The reversal of 165649412 is 214946561.

165649412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 33389 + ... + 38027.

It is an arithmetic number, because the mean of its divisors is an integer number (12342400).

Almost surely, 2^165649412 is an apocalyptic number.

It is an amenable number.

165649412 is a deficient number, since it is larger than the sum of its proper divisors (130568188).

165649412 is a wasteful number, since it uses less digits than its factorization.

165649412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4835 (or 4833 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 165649412 is about 12870.4860825068. The cubic root of 165649412 is about 549.1992888541.

The spelling of 165649412 in words is "one hundred sixty-five million, six hundred forty-nine thousand, four hundred twelve".