163642980 has 24 divisors (see below), whose sum is σ = 458200512. Its totient is φ = 43638112.

The previous prime is 163642967. The next prime is 163642981. The reversal of 163642980 is 89246361.

163642980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (163642981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1363632 + ... + 1363751.

It is an arithmetic number, because the mean of its divisors is an integer number (19091688).

Almost surely, 2^163642980 is an apocalyptic number.

163642980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163642980 is an abundant number, since it is smaller than the sum of its proper divisors (294557532).

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

163642980 is a wasteful number, since it uses less digits than its factorization.

163642980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727395 (or 2727393 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 163642980 is about 12792.3015911915. The cubic root of 163642980 is about 546.9728793731.

The spelling of 163642980 in words is "one hundred sixty-three million, six hundred forty-two thousand, nine hundred eighty".