13879372891 has 2 divisors, whose sum is σ = 13879372892. Its totient is φ = 13879372890.

The previous prime is 13879372861. The next prime is 13879372937. The reversal of 13879372891 is 19827397831.

It is a weak prime.

It is an emirp because it is prime and its reverse (19827397831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13879372891 - 2²⁹ = 13342501979 is a prime.

It is not a weakly prime, because it can be changed into another prime (13879372811) 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, 6939686445 + 6939686446.

It is an arithmetic number, because the mean of its divisors is an integer number (6939686446).

Almost surely, 2^13879372891 is an apocalyptic number.

13879372891 is a deficient number, since it is larger than the sum of its proper divisors (1).

13879372891 is an equidigital number, since it uses as much as digits as its factorization.

13879372891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 58.

The spelling of 13879372891 in words is "thirteen billion, eight hundred seventy-nine million, three hundred seventy-two thousand, eight hundred ninety-one".