18936969167 has 2 divisors, whose sum is σ = 18936969168. Its totient is φ = 18936969166.

The previous prime is 18936969131. The next prime is 18936969169. The reversal of 18936969167 is 76196963981.

It is a strong prime.

It is an emirp because it is prime and its reverse (76196963981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18936969167 - 2²⁸ = 18668533711 is a prime.

Together with 18936969169, 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 (18936969169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9468484583 + 9468484584.

It is an arithmetic number, because the mean of its divisors is an integer number (9468484584).

Almost surely, 2^18936969167 is an apocalyptic number.

18936969167 is a deficient number, since it is larger than the sum of its proper divisors (1).

18936969167 is an equidigital number, since it uses as much as digits as its factorization.

18936969167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26453952, while the sum is 65.

The spelling of 18936969167 in words is "eighteen billion, nine hundred thirty-six million, nine hundred sixty-nine thousand, one hundred sixty-seven".