18268363499 has 2 divisors, whose sum is σ = 18268363500. Its totient is φ = 18268363498.

The previous prime is 18268363493. The next prime is 18268363511. The reversal of 18268363499 is 99436386281.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18268363499 is a prime.

It is not a weakly prime, because it can be changed into another prime (18268363493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9134181749 + 9134181750.

It is an arithmetic number, because the mean of its divisors is an integer number (9134181750).

Almost surely, 2^18268363499 is an apocalyptic number.

18268363499 is a deficient number, since it is larger than the sum of its proper divisors (1).

18268363499 is an equidigital number, since it uses as much as digits as its factorization.

18268363499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13436928, while the sum is 59.

The spelling of 18268363499 in words is "eighteen billion, two hundred sixty-eight million, three hundred sixty-three thousand, four hundred ninety-nine".