13931094169 has 2 divisors, whose sum is σ = 13931094170. Its totient is φ = 13931094168.

The previous prime is 13931094157. The next prime is 13931094187. The reversal of 13931094169 is 96149013931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11574962569 + 2356131600 = 107587^2 + 48540^2 .

It is a cyclic number.

It is not a de Polignac number, because 13931094169 - 2⁷ = 13931094041 is a prime.

It is a super-2 number, since 2×13931094169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13931094469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6965547084 + 6965547085.

It is an arithmetic number, because the mean of its divisors is an integer number (6965547085).

Almost surely, 2^13931094169 is an apocalyptic number.

It is an amenable number.

13931094169 is a deficient number, since it is larger than the sum of its proper divisors (1).

13931094169 is an equidigital number, since it uses as much as digits as its factorization.

13931094169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 46.

The spelling of 13931094169 in words is "thirteen billion, nine hundred thirty-one million, ninety-four thousand, one hundred sixty-nine".