18914804323 has 4 divisors (see below), whose sum is σ = 19910320360. Its totient is φ = 17919288288.

The previous prime is 18914804291. The next prime is 18914804327. The reversal of 18914804323 is 32340841981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18914804323 - 2⁵ = 18914804291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18914804323.

It is not an unprimeable number, because it can be changed into a prime (18914804327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497757990 + ... + 497758027.

It is an arithmetic number, because the mean of its divisors is an integer number (4977580090).

Almost surely, 2^18914804323 is an apocalyptic number.

18914804323 is a deficient number, since it is larger than the sum of its proper divisors (995516037).

18914804323 is an equidigital number, since it uses as much as digits as its factorization.

18914804323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995516036.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 18914804323 in words is "eighteen billion, nine hundred fourteen million, eight hundred four thousand, three hundred twenty-three".