18836416065 has 16 divisors (see below), whose sum is σ = 30141453888. Its totient is φ = 10045025856.

The previous prime is 18836416031. The next prime is 18836416073. The reversal of 18836416065 is 56061463881.

It is not a de Polignac number, because 18836416065 - 2¹⁵ = 18836383297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92347 + ... + 214943.

It is an arithmetic number, because the mean of its divisors is an integer number (1883840868).

Almost surely, 2^18836416065 is an apocalyptic number.

18836416065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18836416065 is a deficient number, since it is larger than the sum of its proper divisors (11305037823).

18836416065 is a wasteful number, since it uses less digits than its factorization.

18836416065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132848.

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 18836416065 in words is "eighteen billion, eight hundred thirty-six million, four hundred sixteen thousand, sixty-five".