13913890187 has 2 divisors, whose sum is σ = 13913890188. Its totient is φ = 13913890186.

The previous prime is 13913890169. The next prime is 13913890213. The reversal of 13913890187 is 78109831931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13913890187 - 2²⁶ = 13846781323 is a prime.

It is not a weakly prime, because it can be changed into another prime (13913890117) 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, 6956945093 + 6956945094.

It is an arithmetic number, because the mean of its divisors is an integer number (6956945094).

Almost surely, 2^13913890187 is an apocalyptic number.

13913890187 is a deficient number, since it is larger than the sum of its proper divisors (1).

13913890187 is an equidigital number, since it uses as much as digits as its factorization.

13913890187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 50.

The spelling of 13913890187 in words is "thirteen billion, nine hundred thirteen million, eight hundred ninety thousand, one hundred eighty-seven".