1156653872 has 40 divisors (see below), whose sum is σ = 2451271680. Its totient is φ = 524348480.

The previous prime is 1156653863. The next prime is 1156653881. The reversal of 1156653872 is 2783566511.

It is an interprime number because it is at equal distance from previous prime (1156653863) and next prime (1156653881).

It is a super-2 number, since 2×1156653872² = 2675696359225184768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58829 + ... + 75987.

It is an arithmetic number, because the mean of its divisors is an integer number (61281792).

Almost surely, 2^1156653872 is an apocalyptic number.

It is an amenable number.

1156653872 is an abundant number, since it is smaller than the sum of its proper divisors (1294617808).

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

1156653872 is a wasteful number, since it uses less digits than its factorization.

1156653872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17561 (or 17555 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The square root of 1156653872 is about 34009.6144053413. The cubic root of 1156653872 is about 1049.7063039500.

The spelling of 1156653872 in words is "one billion, one hundred fifty-six million, six hundred fifty-three thousand, eight hundred seventy-two".