168913536 has 64 divisors (see below), whose sum is σ = 489477600. Its totient is φ = 51184640.

The previous prime is 168913523. The next prime is 168913543. The reversal of 168913536 is 635319861.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

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, 15771 + ... + 24218.

Almost surely, 2^168913536 is an apocalyptic number.

168913536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

168913536 is an abundant number, since it is smaller than the sum of its proper divisors (320564064).

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

168913536 is a wasteful number, since it uses less digits than its factorization.

168913536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40017 (or 40005 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 168913536 is about 12996.6740360755. The cubic root of 168913536 is about 552.7831773178.

It can be divided in two parts, 1689 and 13536, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 168913536 in words is "one hundred sixty-eight million, nine hundred thirteen thousand, five hundred thirty-six".