1156858864 has 40 divisors (see below), whose sum is σ = 2563217888. Its totient is φ = 495486720.

The previous prime is 1156858847. The next prime is 1156858907. The reversal of 1156858864 is 4688586511.

It is a congruent number.

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, 324934 + ... + 328474.

Almost surely, 2^1156858864 is an apocalyptic number.

1156858864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1156858864 is an abundant number, since it is smaller than the sum of its proper divisors (1406359024).

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

1156858864 is a wasteful number, since it uses less digits than its factorization.

1156858864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6473 (or 6467 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 52.

The square root of 1156858864 is about 34012.6280078444. The cubic root of 1156858864 is about 1049.7683129022.

The spelling of 1156858864 in words is "one billion, one hundred fifty-six million, eight hundred fifty-eight thousand, eight hundred sixty-four".