18304808659 has 2 divisors, whose sum is σ = 18304808660. Its totient is φ = 18304808658.

The previous prime is 18304808657. The next prime is 18304808689. The reversal of 18304808659 is 95680840381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18304808659 - 2¹ = 18304808657 is a prime.

Together with 18304808657, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18304808657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9152404329 + 9152404330.

It is an arithmetic number, because the mean of its divisors is an integer number (9152404330).

Almost surely, 2^18304808659 is an apocalyptic number.

18304808659 is a deficient number, since it is larger than the sum of its proper divisors (1).

18304808659 is an equidigital number, since it uses as much as digits as its factorization.

18304808659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 18304808659 in words is "eighteen billion, three hundred four million, eight hundred eight thousand, six hundred fifty-nine".