16918065458 has 30 divisors (see below), whose sum is σ = 29620633821. Its totient is φ = 7246736616.

The previous prime is 16918065391. The next prime is 16918065467. The reversal of 16918065458 is 85456081961.

It can be written as a sum of positive squares in 2 ways, for example, as 16645386289 + 272679169 = 129017^2 + 16513^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=91973.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 9012416 + ... + 9014292.

Almost surely, 2^16918065458 is an apocalyptic number.

16918065458 is a deficient number, since it is larger than the sum of its proper divisors (12702568363).

16918065458 is an frugal number, since it uses more digits than its factorization.

16918065458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784 (or 1886 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 53.

The spelling of 16918065458 in words is "sixteen billion, nine hundred eighteen million, sixty-five thousand, four hundred fifty-eight".