165636164 has 6 divisors (see below), whose sum is σ = 289863294. Its totient is φ = 82818080.

The previous prime is 165636143. The next prime is 165636173. The reversal of 165636164 is 461636561.

165636164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 129732100 + 35904064 = 11390^2 + 5992^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20704517 + ... + 20704524.

It is an arithmetic number, because the mean of its divisors is an integer number (48310549).

Almost surely, 2^165636164 is an apocalyptic number.

It is an amenable number.

165636164 is a deficient number, since it is larger than the sum of its proper divisors (124227130).

165636164 is a wasteful number, since it uses less digits than its factorization.

165636164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41409045 (or 41409043 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The square root of 165636164 is about 12869.9714063396. The cubic root of 165636164 is about 549.1846475180.

The spelling of 165636164 in words is "one hundred sixty-five million, six hundred thirty-six thousand, one hundred sixty-four".