18320994183 has 8 divisors (see below), whose sum is σ = 24554562928. Its totient is φ = 12150710784.

The previous prime is 18320994157. The next prime is 18320994191. The reversal of 18320994183 is 38149902381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18320994183 - 2⁶ = 18320994119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18320194183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15820660 + ... + 15821817.

It is an arithmetic number, because the mean of its divisors is an integer number (3069320366).

Almost surely, 2^18320994183 is an apocalyptic number.

18320994183 is a deficient number, since it is larger than the sum of its proper divisors (6233568745).

18320994183 is a wasteful number, since it uses less digits than its factorization.

18320994183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31642673.

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 18320994183 in words is "eighteen billion, three hundred twenty million, nine hundred ninety-four thousand, one hundred eighty-three".