18222183936 has 240 divisors, whose sum is σ = 57607437888. Its totient is φ = 5499187200.

The previous prime is 18222183929. The next prime is 18222183949. The reversal of 18222183936 is 63938122281.

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

It is a junction number, because it is equal to n+sod(n) for n = 18222183891 and 18222183900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15560631 + ... + 15561801.

Almost surely, 2^18222183936 is an apocalyptic number.

18222183936 is a gapful number since it is divisible by the number (16) 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 18222183936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28803718944).

18222183936 is an abundant number, since it is smaller than the sum of its proper divisors (39385253952).

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

18222183936 is a wasteful number, since it uses less digits than its factorization.

18222183936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513 (or 1494 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The spelling of 18222183936 in words is "eighteen billion, two hundred twenty-two million, one hundred eighty-three thousand, nine hundred thirty-six".