163632973 has 16 divisors (see below), whose sum is σ = 204401664. Its totient is φ = 127745280.

The previous prime is 163632967. The next prime is 163632977. The reversal of 163632973 is 379236361.

163632973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 163632973 - 2⁵ = 163632941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163632977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18490 + ... + 25867.

It is an arithmetic number, because the mean of its divisors is an integer number (12775104).

Almost surely, 2^163632973 is an apocalyptic number.

It is an amenable number.

163632973 is a deficient number, since it is larger than the sum of its proper divisors (40768691).

163632973 is a wasteful number, since it uses less digits than its factorization.

163632973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44412.

The product of its digits is 122472, while the sum is 40.

The square root of 163632973 is about 12791.9104515315. The cubic root of 163632973 is about 546.9617297570.

The spelling of 163632973 in words is "one hundred sixty-three million, six hundred thirty-two thousand, nine hundred seventy-three".