163951232 has 16 divisors (see below), whose sum is σ = 326621850. Its totient is φ = 81975552.

The previous prime is 163951223. The next prime is 163951259. The reversal of 163951232 is 232159361.

It can be written as a sum of positive squares in only one way, i.e., 91087936 + 72863296 = 9544^2 + 8536^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

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 as a sum of consecutive naturals, namely, 640307 + ... + 640562.

Almost surely, 2^163951232 is an apocalyptic number.

It is an amenable number.

163951232 is a deficient number, since it is larger than the sum of its proper divisors (162670618).

163951232 is an equidigital number, since it uses as much as digits as its factorization.

163951232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280883 (or 1280871 counting only the distinct ones).

The product of its digits is 9720, while the sum is 32.

The square root of 163951232 is about 12804.3442627883. The cubic root of 163951232 is about 547.3161056821.

The spelling of 163951232 in words is "one hundred sixty-three million, nine hundred fifty-one thousand, two hundred thirty-two".