1158312975 has 12 divisors (see below), whose sum is σ = 1915077576. Its totient is φ = 617766880.

The previous prime is 1158312937. The next prime is 1158313007. The reversal of 1158312975 is 5792138511.

It is not a de Polignac number, because 1158312975 - 2⁷ = 1158312847 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7722012 + ... + 7722161.

It is an arithmetic number, because the mean of its divisors is an integer number (159589798).

Almost surely, 2^1158312975 is an apocalyptic number.

1158312975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1158312975 is a deficient number, since it is larger than the sum of its proper divisors (756764601).

1158312975 is a wasteful number, since it uses less digits than its factorization.

1158312975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15444186 (or 15444181 counting only the distinct ones).

The product of its digits is 75600, while the sum is 42.

The square root of 1158312975 is about 34033.9973408943. The cubic root of 1158312975 is about 1050.2079633431.

The spelling of 1158312975 in words is "one billion, one hundred fifty-eight million, three hundred twelve thousand, nine hundred seventy-five".