18340674659 has 2 divisors, whose sum is σ = 18340674660. Its totient is φ = 18340674658.

The previous prime is 18340674643. The next prime is 18340674661. The reversal of 18340674659 is 95647604381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18340674659 - 2⁴ = 18340674643 is a prime.

Together with 18340674661, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18340674659.

It is not a weakly prime, because it can be changed into another prime (18340674629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9170337329 + 9170337330.

It is an arithmetic number, because the mean of its divisors is an integer number (9170337330).

Almost surely, 2^18340674659 is an apocalyptic number.

18340674659 is a deficient number, since it is larger than the sum of its proper divisors (1).

18340674659 is an equidigital number, since it uses as much as digits as its factorization.

18340674659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 18340674659 in words is "eighteen billion, three hundred forty million, six hundred seventy-four thousand, six hundred fifty-nine".