3158597891 has 2 divisors, whose sum is σ = 3158597892. Its totient is φ = 3158597890.

The previous prime is 3158597879. The next prime is 3158597899. The reversal of 3158597891 is 1987958513.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3158597891 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (3158597899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1579298945 + 1579298946.

It is an arithmetic number, because the mean of its divisors is an integer number (1579298946).

Almost surely, 2^3158597891 is an apocalyptic number.

3158597891 is a deficient number, since it is larger than the sum of its proper divisors (1).

3158597891 is an equidigital number, since it uses as much as digits as its factorization.

3158597891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 56.

The square root of 3158597891 is about 56201.4047066441. The cubic root of 3158597891 is about 1467.2297141294.

The spelling of 3158597891 in words is "three billion, one hundred fifty-eight million, five hundred ninety-seven thousand, eight hundred ninety-one".