18343405967 has 2 divisors, whose sum is σ = 18343405968. Its totient is φ = 18343405966.

The previous prime is 18343405939. The next prime is 18343406021. The reversal of 18343405967 is 76950434381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18343405967 - 2²⁰ = 18342357391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18343405937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9171702983 + 9171702984.

It is an arithmetic number, because the mean of its divisors is an integer number (9171702984).

Almost surely, 2^18343405967 is an apocalyptic number.

18343405967 is a deficient number, since it is larger than the sum of its proper divisors (1).

18343405967 is an equidigital number, since it uses as much as digits as its factorization.

18343405967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 18343405967 in words is "eighteen billion, three hundred forty-three million, four hundred five thousand, nine hundred sixty-seven".