165173536 has 48 divisors (see below), whose sum is σ = 373433760. Its totient is φ = 71124480.

The previous prime is 165173527. The next prime is 165173551. The reversal of 165173536 is 635371561.

It is a junction number, because it is equal to n+sod(n) for n = 165173495 and 165173504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5661 + ... + 19036.

It is an arithmetic number, because the mean of its divisors is an integer number (7779870).

Almost surely, 2^165173536 is an apocalyptic number.

165173536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165173536 is an abundant number, since it is smaller than the sum of its proper divisors (208260224).

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

165173536 is a wasteful number, since it uses less digits than its factorization.

165173536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24737 (or 24729 counting only the distinct ones).

The product of its digits is 56700, while the sum is 37.

The square root of 165173536 is about 12851.9856831542. The cubic root of 165173536 is about 548.6728730010.

The spelling of 165173536 in words is "one hundred sixty-five million, one hundred seventy-three thousand, five hundred thirty-six".