165872358 has 24 divisors (see below), whose sum is σ = 359858928. Its totient is φ = 55218672.

The previous prime is 165872327. The next prime is 165872381. The reversal of 165872358 is 853278561.

165872358 is a `hidden beast` number, since 16 + 587 + 2 + 3 + 58 = 666.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 9216 + ... + 20412.

It is an arithmetic number, because the mean of its divisors is an integer number (14994122).

Almost surely, 2^165872358 is an apocalyptic number.

165872358 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

165872358 is an abundant number, since it is smaller than the sum of its proper divisors (193986570).

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

165872358 is a wasteful number, since it uses less digits than its factorization.

165872358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12028 (or 12025 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 165872358 is about 12879.1443038736. The cubic root of 165872358 is about 549.4455658016.

The spelling of 165872358 in words is "one hundred sixty-five million, eight hundred seventy-two thousand, three hundred fifty-eight".