13888918891 has 2 divisors, whose sum is σ = 13888918892. Its totient is φ = 13888918890.

The previous prime is 13888918877. The next prime is 13888918903. The reversal of 13888918891 is 19881988831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13888918891 - 2²³ = 13880530283 is a prime.

It is not a weakly prime, because it can be changed into another prime (13888918801) 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, 6944459445 + 6944459446.

It is an arithmetic number, because the mean of its divisors is an integer number (6944459446).

Almost surely, 2^13888918891 is an apocalyptic number.

13888918891 is a deficient number, since it is larger than the sum of its proper divisors (1).

13888918891 is an equidigital number, since it uses as much as digits as its factorization.

13888918891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7962624, while the sum is 64.

The spelling of 13888918891 in words is "thirteen billion, eight hundred eighty-eight million, nine hundred eighteen thousand, eight hundred ninety-one".