1156370868 has 18 divisors (see below), whose sum is σ = 2923048674. Its totient is φ = 385456944.

The previous prime is 1156370867. The next prime is 1156370869. The reversal of 1156370868 is 8680736511.

1156370868 is a `hidden beast` number, since 1 + 1 + 5 + 637 + 0 + 8 + 6 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (1156370867) and next prime (1156370869).

It can be written as a sum of positive squares in only one way, i.e., 585543204 + 570827664 = 24198^2 + 23892^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156370867) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16060671 + ... + 16060742.

It is an arithmetic number, because the mean of its divisors is an integer number (162391593).

Almost surely, 2^1156370868 is an apocalyptic number.

1156370868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1156370868 is an abundant number, since it is smaller than the sum of its proper divisors (1766677806).

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

1156370868 is a wasteful number, since it uses less digits than its factorization.

1156370868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32121423 (or 32121418 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1156370868 is about 34005.4535038132. The cubic root of 1156370868 is about 1049.6206847566.

The spelling of 1156370868 in words is "one billion, one hundred fifty-six million, three hundred seventy thousand, eight hundred sixty-eight".