813137157269 has 2 divisors, whose sum is σ = 813137157270. Its totient is φ = 813137157268.

The previous prime is 813137157247. The next prime is 813137157323. The reversal of 813137157269 is 962751731318.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 808686532900 + 4450624369 = 899270^2 + 66713^2 .

It is a cyclic number.

It is not a de Polignac number, because 813137157269 - 2⁸ = 813137157013 is a prime.

It is a super-2 number, since 2×813137157269² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 813137157269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813137147269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406568578634 + 406568578635.

It is an arithmetic number, because the mean of its divisors is an integer number (406568578635).

Almost surely, 2^813137157269 is an apocalyptic number.

It is an amenable number.

813137157269 is a deficient number, since it is larger than the sum of its proper divisors (1).

813137157269 is an equidigital number, since it uses as much as digits as its factorization.

813137157269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 53.

The spelling of 813137157269 in words is "eight hundred thirteen billion, one hundred thirty-seven million, one hundred fifty-seven thousand, two hundred sixty-nine".