165630144 has 56 divisors (see below), whose sum is σ = 461304640. Its totient is φ = 52303104.

The previous prime is 165630139. The next prime is 165630151. The reversal of 165630144 is 441036561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19054 + ... + 26349.

Almost surely, 2^165630144 is an apocalyptic number.

It is an amenable number.

165630144 is an abundant number, since it is smaller than the sum of its proper divisors (295674496).

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

165630144 is a wasteful number, since it uses less digits than its factorization.

165630144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45437 (or 45427 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 165630144 is about 12869.7375264611. The cubic root of 165630144 is about 549.1779941167.

The spelling of 165630144 in words is "one hundred sixty-five million, six hundred thirty thousand, one hundred forty-four".