165875136 has 56 divisors (see below), whose sum is σ = 501578880. Its totient is φ = 47392512.

The previous prime is 165875093. The next prime is 165875153. The reversal of 165875136 is 631578561.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 60366 + ... + 63053.

Almost surely, 2^165875136 is an apocalyptic number.

165875136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165875136 is an abundant number, since it is smaller than the sum of its proper divisors (335703744).

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

165875136 is a wasteful number, since it uses less digits than its factorization.

165875136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123441 (or 123431 counting only the distinct ones).

The product of its digits is 151200, while the sum is 42.

The square root of 165875136 is about 12879.2521522020. The cubic root of 165875136 is about 549.4486331225.

The spelling of 165875136 in words is "one hundred sixty-five million, eight hundred seventy-five thousand, one hundred thirty-six".