8157332969 has 2 divisors, whose sum is σ = 8157332970. Its totient is φ = 8157332968.

The previous prime is 8157332933. The next prime is 8157332971. The reversal of 8157332969 is 9692337518.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4377542569 + 3779790400 = 66163^2 + 61480^2 .

It is a cyclic number.

It is not a de Polignac number, because 8157332969 - 2⁸ = 8157332713 is a prime.

It is a super-2 number, since 2×8157332969² (a number of 21 digits) contains 22 as substring.

Together with 8157332971, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8157332969.

It is not a weakly prime, because it can be changed into another prime (8157332929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4078666484 + 4078666485.

It is an arithmetic number, because the mean of its divisors is an integer number (4078666485).

Almost surely, 2^8157332969 is an apocalyptic number.

It is an amenable number.

8157332969 is a deficient number, since it is larger than the sum of its proper divisors (1).

8157332969 is an equidigital number, since it uses as much as digits as its factorization.

8157332969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 53.

The square root of 8157332969 is about 90317.9548539492. The cubic root of 8157332969 is about 2013.0260574768.

The spelling of 8157332969 in words is "eight billion, one hundred fifty-seven million, three hundred thirty-two thousand, nine hundred sixty-nine".