1158315061 has 2 divisors, whose sum is σ = 1158315062. Its totient is φ = 1158315060.

The previous prime is 1158315023. The next prime is 1158315079. The reversal of 1158315061 is 1605138511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 749062161 + 409252900 = 27369^2 + 20230^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158315061 - 2¹⁷ = 1158183989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1158315091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579157530 + 579157531.

It is an arithmetic number, because the mean of its divisors is an integer number (579157531).

Almost surely, 2^1158315061 is an apocalyptic number.

It is an amenable number.

1158315061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158315061 is an equidigital number, since it uses as much as digits as its factorization.

1158315061 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 31.

The square root of 1158315061 is about 34034.0279867077. The cubic root of 1158315061 is about 1050.2085937808.

The spelling of 1158315061 in words is "one billion, one hundred fifty-eight million, three hundred fifteen thousand, sixty-one".