813192013 has 2 divisors, whose sum is σ = 813192014. Its totient is φ = 813192012.

The previous prime is 813192007. The next prime is 813192047. The reversal of 813192013 is 310291318.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 811851049 + 1340964 = 28493^2 + 1158^2 .

It is a cyclic number.

It is not a de Polignac number, because 813192013 - 2²¹ = 811094861 is a prime.

It is a super-2 number, since 2×813192013² = 1322562500013984338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813190013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406596006 + 406596007.

It is an arithmetic number, because the mean of its divisors is an integer number (406596007).

Almost surely, 2^813192013 is an apocalyptic number.

It is an amenable number.

813192013 is a deficient number, since it is larger than the sum of its proper divisors (1).

813192013 is an equidigital number, since it uses as much as digits as its factorization.

813192013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 813192013 is about 28516.5217549406. The cubic root of 813192013 is about 933.3926315925.

The spelling of 813192013 in words is "eight hundred thirteen million, one hundred ninety-two thousand, thirteen".