18843323506 has 16 divisors (see below), whose sum is σ = 32416991424. Its totient is φ = 8047172304.

The previous prime is 18843323497. The next prime is 18843323539. The reversal of 18843323506 is 60532334881.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2374045 + ... + 2381968.

It is an arithmetic number, because the mean of its divisors is an integer number (2026061964).

Almost surely, 2^18843323506 is an apocalyptic number.

18843323506 is a deficient number, since it is larger than the sum of its proper divisors (13573667918).

18843323506 is a wasteful number, since it uses less digits than its factorization.

18843323506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4756305.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 18843323506 in words is "eighteen billion, eight hundred forty-three million, three hundred twenty-three thousand, five hundred six".