165913888 has 24 divisors (see below), whose sum is σ = 373306752. Its totient is φ = 71105856.

The previous prime is 165913877. The next prime is 165913907. The reversal of 165913888 is 888319561.

165913888 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370120 + ... + 370567.

It is an arithmetic number, because the mean of its divisors is an integer number (15554448).

Almost surely, 2^165913888 is an apocalyptic number.

It is an amenable number.

165913888 is an abundant number, since it is smaller than the sum of its proper divisors (207392864).

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

165913888 is an equidigital number, since it uses as much as digits as its factorization.

165913888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740704 (or 740696 counting only the distinct ones).

The product of its digits is 414720, while the sum is 49.

The square root of 165913888 is about 12880.7564995228. The cubic root of 165913888 is about 549.4914174643.

The spelling of 165913888 in words is "one hundred sixty-five million, nine hundred thirteen thousand, eight hundred eighty-eight".