1163155972 has 24 divisors (see below), whose sum is σ = 2258212320. Its totient is φ = 519744960.

The previous prime is 1163155957. The next prime is 1163155993. The reversal of 1163155972 is 2795513611.

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 in 7 ways as a sum of consecutive naturals, for example, 221433 + ... + 226624.

It is an arithmetic number, because the mean of its divisors is an integer number (94092180).

Almost surely, 2^1163155972 is an apocalyptic number.

It is an amenable number.

1163155972 is a deficient number, since it is larger than the sum of its proper divisors (1095056348).

1163155972 is a wasteful number, since it uses less digits than its factorization.

1163155972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448131 (or 448129 counting only the distinct ones).

The product of its digits is 56700, while the sum is 40.

The square root of 1163155972 is about 34105.0725259455. The cubic root of 1163155972 is about 1051.6695953342.

The spelling of 1163155972 in words is "one billion, one hundred sixty-three million, one hundred fifty-five thousand, nine hundred seventy-two".