163168920 has 48 divisors (see below), whose sum is σ = 530300160. Its totient is φ = 43511616.

The previous prime is 163168849. The next prime is 163168933. The reversal of 163168920 is 29861361.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 226264 + ... + 226983.

It is an arithmetic number, because the mean of its divisors is an integer number (11047920).

Almost surely, 2^163168920 is an apocalyptic number.

163168920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163168920 is an abundant number, since it is smaller than the sum of its proper divisors (367131240).

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

163168920 is a wasteful number, since it uses less digits than its factorization.

163168920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453264 (or 453257 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 163168920 is about 12773.7590395310. The cubic root of 163168920 is about 546.4441903227. Note that the first 3 decimals are identical.

The spelling of 163168920 in words is "one hundred sixty-three million, one hundred sixty-eight thousand, nine hundred twenty".