1156941864 has 96 divisors (see below), whose sum is σ = 3393553800. Its totient is φ = 353963520.

The previous prime is 1156941857. The next prime is 1156941871. The reversal of 1156941864 is 4681496511.

1156941864 is a `hidden beast` number, since 1 + 1 + 569 + 4 + 1 + 86 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1156941857) and next prime (1156941871).

It can be written as a sum of positive squares in 4 ways, for example, as 439237764 + 717704100 = 20958^2 + 26790^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166002 + ... + 172830.

Almost surely, 2^1156941864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156941864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1696776900).

1156941864 is an abundant number, since it is smaller than the sum of its proper divisors (2236611936).

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

1156941864 is a wasteful number, since it uses less digits than its factorization.

1156941864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7035 (or 7028 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 1156941864 is about 34013.8481210227. The cubic root of 1156941864 is about 1049.7934178621.

The spelling of 1156941864 in words is "one billion, one hundred fifty-six million, nine hundred forty-one thousand, eight hundred sixty-four".