163632972 has 12 divisors (see below), whose sum is σ = 381810296. Its totient is φ = 54544320.

The previous prime is 163632967. The next prime is 163632977. The reversal of 163632972 is 279236361.

It is an interprime number because it is at equal distance from previous prime (163632967) and next prime (163632977).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 163632972.

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

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 3 ways as a sum of consecutive naturals, for example, 6818029 + ... + 6818052.

Almost surely, 2^163632972 is an apocalyptic number.

163632972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

163632972 is an abundant number, since it is smaller than the sum of its proper divisors (218177324).

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

163632972 is a wasteful number, since it uses less digits than its factorization.

163632972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13636088 (or 13636086 counting only the distinct ones).

The product of its digits is 81648, while the sum is 39.

The square root of 163632972 is about 12791.9104124443. The cubic root of 163632972 is about 546.9617286428.

The spelling of 163632972 in words is "one hundred sixty-three million, six hundred thirty-two thousand, nine hundred seventy-two".