1158315023 has 2 divisors, whose sum is σ = 1158315024. Its totient is φ = 1158315022.

The previous prime is 1158315019. The next prime is 1158315061. The reversal of 1158315023 is 3205138511.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1158315023 - 2² = 1158315019 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1158315523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579157511 + 579157512.

It is an arithmetic number, because the mean of its divisors is an integer number (579157512).

Almost surely, 2^1158315023 is an apocalyptic number.

1158315023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158315023 is an equidigital number, since it uses as much as digits as its factorization.

1158315023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1158315023 is about 34034.0274284428. The cubic root of 1158315023 is about 1050.2085822964.

It can be divided in two parts, 115 and 8315023, that added together give a palindrome (8315138).

The spelling of 1158315023 in words is "one billion, one hundred fifty-eight million, three hundred fifteen thousand, twenty-three".