13190657891 has 2 divisors, whose sum is σ = 13190657892. Its totient is φ = 13190657890.

The previous prime is 13190657881. The next prime is 13190657899. The reversal of 13190657891 is 19875609131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13190657891 - 2¹⁴ = 13190641507 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (13190657899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6595328945 + 6595328946.

It is an arithmetic number, because the mean of its divisors is an integer number (6595328946).

Almost surely, 2^13190657891 is an apocalyptic number.

13190657891 is a deficient number, since it is larger than the sum of its proper divisors (1).

13190657891 is an equidigital number, since it uses as much as digits as its factorization.

13190657891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 50.

The spelling of 13190657891 in words is "thirteen billion, one hundred ninety million, six hundred fifty-seven thousand, eight hundred ninety-one".