165512164 has 18 divisors (see below), whose sum is σ = 299984594. Its totient is φ = 79900800.

The previous prime is 165512141. The next prime is 165512183. The reversal of 165512164 is 461215561.

It can be written as a sum of positive squares in 3 ways, for example, as 3968064 + 161544100 = 1992^2 + 12710^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21237 + ... + 27964.

Almost surely, 2^165512164 is an apocalyptic number.

It is an amenable number.

165512164 is a deficient number, since it is larger than the sum of its proper divisors (134472430).

165512164 is a wasteful number, since it uses less digits than its factorization.

165512164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49263 (or 49232 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 165512164 is about 12865.1530888676. The cubic root of 165512164 is about 549.0475681602.

The spelling of 165512164 in words is "one hundred sixty-five million, five hundred twelve thousand, one hundred sixty-four".