168513636 has 48 divisors (see below), whose sum is σ = 401184000. Its totient is φ = 55041792.

The previous prime is 168513629. The next prime is 168513647. The reversal of 168513636 is 636315861.

It is a junction number, because it is equal to n+sod(n) for n = 168513594 and 168513603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140656 + ... + 141848.

It is an arithmetic number, because the mean of its divisors is an integer number (8358000).

Almost surely, 2^168513636 is an apocalyptic number.

It is an amenable number.

168513636 is an abundant number, since it is smaller than the sum of its proper divisors (232670364).

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

168513636 is a wasteful number, since it uses less digits than its factorization.

168513636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428 (or 1426 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 168513636 is about 12981.2802142162. The cubic root of 168513636 is about 552.3465975977.

The spelling of 168513636 in words is "one hundred sixty-eight million, five hundred thirteen thousand, six hundred thirty-six".