1158159931 has 2 divisors, whose sum is σ = 1158159932. Its totient is φ = 1158159930.

The previous prime is 1158159889. The next prime is 1158159941. The reversal of 1158159931 is 1399518511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1158159931 - 2⁷ = 1158159803 is a prime.

It is a super-2 number, since 2×1158159931² = 2682668851547849522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1158159941) by changing a digit.

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 as a sum of consecutive naturals, namely, 579079965 + 579079966.

It is an arithmetic number, because the mean of its divisors is an integer number (579079966).

Almost surely, 2^1158159931 is an apocalyptic number.

1158159931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158159931 is an equidigital number, since it uses as much as digits as its factorization.

1158159931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 43.

The square root of 1158159931 is about 34031.7488677852. The cubic root of 1158159931 is about 1050.1617078232.

The spelling of 1158159931 in words is "one billion, one hundred fifty-eight million, one hundred fifty-nine thousand, nine hundred thirty-one".