18889822223 has 4 divisors (see below), whose sum is σ = 19010139720. Its totient is φ = 18769504728.

The previous prime is 18889822201. The next prime is 18889822247. The reversal of 18889822223 is 32222898881.

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 18889822223 - 2²² = 18885627919 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 (18889824223) 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, 60158513 + ... + 60158826.

It is an arithmetic number, because the mean of its divisors is an integer number (4752534930).

Almost surely, 2^18889822223 is an apocalyptic number.

18889822223 is a deficient number, since it is larger than the sum of its proper divisors (120317497).

18889822223 is a wasteful number, since it uses less digits than its factorization.

18889822223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120317496.

The product of its digits is 1769472, while the sum is 53.

The spelling of 18889822223 in words is "eighteen billion, eight hundred eighty-nine million, eight hundred twenty-two thousand, two hundred twenty-three".