938791655369 has 2 divisors, whose sum is σ = 938791655370. Its totient is φ = 938791655368.

The previous prime is 938791655323. The next prime is 938791655371. The reversal of 938791655369 is 963556197839.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 734046265225 + 204745390144 = 856765^2 + 452488^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-938791655369 is a prime.

It is a super-2 number, since 2×938791655369² (a number of 25 digits) contains 22 as substring.

Together with 938791655371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (938793655369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469395827684 + 469395827685.

It is an arithmetic number, because the mean of its divisors is an integer number (469395827685).

Almost surely, 2^938791655369 is an apocalyptic number.

It is an amenable number.

938791655369 is a deficient number, since it is larger than the sum of its proper divisors (1).

938791655369 is an equidigital number, since it uses as much as digits as its factorization.

938791655369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 330674400, while the sum is 71.

The spelling of 938791655369 in words is "nine hundred thirty-eight billion, seven hundred ninety-one million, six hundred fifty-five thousand, three hundred sixty-nine".