165185238 has 8 divisors (see below), whose sum is σ = 330370488. Its totient is φ = 55061744.

The previous prime is 165185233. The next prime is 165185299. The reversal of 165185238 is 832581561.

165185238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

165185238 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 165185196 and 165185205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165185233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13765431 + ... + 13765442.

It is an arithmetic number, because the mean of its divisors is an integer number (41296311).

Almost surely, 2^165185238 is an apocalyptic number.

165185238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

165185238 is a wasteful number, since it uses less digits than its factorization.

165185238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27530878.

The product of its digits is 57600, while the sum is 39.

The square root of 165185238 is about 12852.4409354799. The cubic root of 165185238 is about 548.6858299159.

The spelling of 165185238 in words is "one hundred sixty-five million, one hundred eighty-five thousand, two hundred thirty-eight".