18867050159 has 2 divisors, whose sum is σ = 18867050160. Its totient is φ = 18867050158.

The previous prime is 18867050129. The next prime is 18867050161. The reversal of 18867050159 is 95105076881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18867050159 - 2¹⁶ = 18866984623 is a prime.

It is a Sophie Germain prime.

Together with 18867050161, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18867050119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9433525079 + 9433525080.

It is an arithmetic number, because the mean of its divisors is an integer number (9433525080).

Almost surely, 2^18867050159 is an apocalyptic number.

18867050159 is a deficient number, since it is larger than the sum of its proper divisors (1).

18867050159 is an equidigital number, since it uses as much as digits as its factorization.

18867050159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 50.

The spelling of 18867050159 in words is "eighteen billion, eight hundred sixty-seven million, fifty thousand, one hundred fifty-nine".