1156633672 has 8 divisors (see below), whose sum is σ = 2168688150. Its totient is φ = 578316832.

The previous prime is 1156633649. The next prime is 1156633693. The reversal of 1156633672 is 2763366511.

It can be written as a sum of positive squares in only one way, i.e., 1080699876 + 75933796 = 32874^2 + 8714^2 .

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, 72289597 + ... + 72289612.

Almost surely, 2^1156633672 is an apocalyptic number.

It is an amenable number.

1156633672 is a deficient number, since it is larger than the sum of its proper divisors (1012054478).

1156633672 is a wasteful number, since it uses less digits than its factorization.

1156633672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144579215 (or 144579211 counting only the distinct ones).

The product of its digits is 136080, while the sum is 40.

The square root of 1156633672 is about 34009.3174291987. The cubic root of 1156633672 is about 1049.7001931646.

The spelling of 1156633672 in words is "one billion, one hundred fifty-six million, six hundred thirty-three thousand, six hundred seventy-two".