8135389313 has 2 divisors, whose sum is σ = 8135389314. Its totient is φ = 8135389312.

The previous prime is 8135389181. The next prime is 8135389349. The reversal of 8135389313 is 3139835318.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8083448464 + 51940849 = 89908^2 + 7207^2 .

It is a cyclic number.

It is not a de Polignac number, because 8135389313 - 2²⁰ = 8134340737 is a prime.

It is a super-2 number, since 2×8135389313² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8135383313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4067694656 + 4067694657.

It is an arithmetic number, because the mean of its divisors is an integer number (4067694657).

Almost surely, 2^8135389313 is an apocalyptic number.

It is an amenable number.

8135389313 is a deficient number, since it is larger than the sum of its proper divisors (1).

8135389313 is an equidigital number, since it uses as much as digits as its factorization.

8135389313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 44.

The square root of 8135389313 is about 90196.3930154638. The cubic root of 8135389313 is about 2011.2193877331.

The spelling of 8135389313 in words is "eight billion, one hundred thirty-five million, three hundred eighty-nine thousand, three hundred thirteen".