1156253992 has 8 divisors (see below), whose sum is σ = 2167976250. Its totient is φ = 578126992.

The previous prime is 1156253981. The next prime is 1156254049. The reversal of 1156253992 is 2993526511.

It can be written as a sum of positive squares in only one way, i.e., 1140683076 + 15570916 = 33774^2 + 3946^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72265867 + ... + 72265882.

Almost surely, 2^1156253992 is an apocalyptic number.

It is an amenable number.

1156253992 is a deficient number, since it is larger than the sum of its proper divisors (1011722258).

1156253992 is a wasteful number, since it uses less digits than its factorization.

1156253992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144531755 (or 144531751 counting only the distinct ones).

The product of its digits is 145800, while the sum is 43.

The square root of 1156253992 is about 34003.7349713234. The cubic root of 1156253992 is about 1049.5853213613.

The spelling of 1156253992 in words is "one billion, one hundred fifty-six million, two hundred fifty-three thousand, nine hundred ninety-two".