1164995272 has 16 divisors (see below), whose sum is σ = 2496418560. Its totient is φ = 499283664.

The previous prime is 1164995239. The next prime is 1164995281. The reversal of 1164995272 is 2725994611.

It is an unprimeable number.

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, 10401688 + ... + 10401799.

It is an arithmetic number, because the mean of its divisors is an integer number (156026160).

Almost surely, 2^1164995272 is an apocalyptic number.

It is an amenable number.

1164995272 is an abundant number, since it is smaller than the sum of its proper divisors (1331423288).

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

1164995272 is a wasteful number, since it uses less digits than its factorization.

1164995272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20803500 (or 20803496 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The square root of 1164995272 is about 34132.0270713592. The cubic root of 1164995272 is about 1052.2236388843.

It can be divided in two parts, 116499 and 5272, that added together give a triangular number (121771 = T₄₉₃).

The spelling of 1164995272 in words is "one billion, one hundred sixty-four million, nine hundred ninety-five thousand, two hundred seventy-two".