18889822224 has 720 divisors, whose sum is σ = 69855052800. Its totient is φ = 4755179520.

The previous prime is 18889822201. The next prime is 18889822247. The reversal of 18889822224 is 42222898881.

It is an interprime number because it is at equal distance from previous prime (18889822201) and next prime (18889822247).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 258764652 + ... + 258764724.

Almost surely, 2^18889822224 is an apocalyptic number.

18889822224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18889822224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34927526400).

18889822224 is an abundant number, since it is smaller than the sum of its proper divisors (50965230576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18889822224 is a wasteful number, since it uses less digits than its factorization.

18889822224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 129 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 54.

The spelling of 18889822224 in words is "eighteen billion, eight hundred eighty-nine million, eight hundred twenty-two thousand, two hundred twenty-four".