163856868 has 48 divisors (see below), whose sum is σ = 448769664. Its totient is φ = 45550080.

The previous prime is 163856851. The next prime is 163856887. The reversal of 163856868 is 868658361.

It is a self number, because there is not a number n which added to its sum of digits gives 163856868.

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 15 ways as a sum of consecutive naturals, for example, 23253 + ... + 29468.

It is an arithmetic number, because the mean of its divisors is an integer number (9349368).

Almost surely, 2^163856868 is an apocalyptic number.

It is an amenable number.

163856868 is an abundant number, since it is smaller than the sum of its proper divisors (284912796).

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

163856868 is a wasteful number, since it uses less digits than its factorization.

163856868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52772 (or 52770 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The square root of 163856868 is about 12800.6588892916. The cubic root of 163856868 is about 547.2110808561.

The spelling of 163856868 in words is "one hundred sixty-three million, eight hundred fifty-six thousand, eight hundred sixty-eight".