18013516459 has 2 divisors, whose sum is σ = 18013516460. Its totient is φ = 18013516458.

The previous prime is 18013516379. The next prime is 18013516483. The reversal of 18013516459 is 95461531081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18013516459 - 2¹⁹ = 18012992171 is a prime.

It is not a weakly prime, because it can be changed into another prime (18013516259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9006758229 + 9006758230.

It is an arithmetic number, because the mean of its divisors is an integer number (9006758230).

Almost surely, 2^18013516459 is an apocalyptic number.

18013516459 is a deficient number, since it is larger than the sum of its proper divisors (1).

18013516459 is an equidigital number, since it uses as much as digits as its factorization.

18013516459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 43.

The spelling of 18013516459 in words is "eighteen billion, thirteen million, five hundred sixteen thousand, four hundred fifty-nine".