165585238 has 16 divisors (see below), whose sum is σ = 305696160. Its totient is φ = 65506176.

The previous prime is 165585223. The next prime is 165585269. The reversal of 165585238 is 832585561.

It is a junction number, because it is equal to n+sod(n) for n = 165585194 and 165585203.

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, 454723 + ... + 455086.

It is an arithmetic number, because the mean of its divisors is an integer number (19106010).

Almost surely, 2^165585238 is an apocalyptic number.

165585238 is a deficient number, since it is larger than the sum of its proper divisors (140110922).

165585238 is a wasteful number, since it uses less digits than its factorization.

165585238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909831.

The product of its digits is 288000, while the sum is 43.

The square root of 165585238 is about 12867.9927727676. The cubic root of 165585238 is about 549.1283581919.

The spelling of 165585238 in words is "one hundred sixty-five million, five hundred eighty-five thousand, two hundred thirty-eight".