18473465999 has 2 divisors, whose sum is σ = 18473466000. Its totient is φ = 18473465998.

The previous prime is 18473465963. The next prime is 18473466013. The reversal of 18473465999 is 99956437481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18473465999 - 2⁸ = 18473465743 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18473165999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9236732999 + 9236733000.

It is an arithmetic number, because the mean of its divisors is an integer number (9236733000).

Almost surely, 2^18473465999 is an apocalyptic number.

18473465999 is a deficient number, since it is larger than the sum of its proper divisors (1).

18473465999 is an equidigital number, since it uses as much as digits as its factorization.

18473465999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58786560, while the sum is 65.

The spelling of 18473465999 in words is "eighteen billion, four hundred seventy-three million, four hundred sixty-five thousand, nine hundred ninety-nine".