1156983960 has 256 divisors, whose sum is σ = 4098263040. Its totient is φ = 258129920.

The previous prime is 1156983959. The next prime is 1156983991. The reversal of 1156983960 is 693896511.

It is a super-2 number, since 2×1156983960² = 2677223767394563200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1054132 + ... + 1055228.

It is an arithmetic number, because the mean of its divisors is an integer number (16008840).

Almost surely, 2^1156983960 is an apocalyptic number.

1156983960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156983960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2049131520).

1156983960 is an abundant number, since it is smaller than the sum of its proper divisors (2941279080).

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

1156983960 is a wasteful number, since it uses less digits than its factorization.

1156983960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 1156983960 is about 34014.4669221789. The cubic root of 1156983960 is about 1049.8061501549.

The spelling of 1156983960 in words is "one billion, one hundred fifty-six million, nine hundred eighty-three thousand, nine hundred sixty".