18381822204 has 24 divisors (see below), whose sum is σ = 42893112528. Its totient is φ = 6126960640.

The previous prime is 18381822187. The next prime is 18381822223. The reversal of 18381822204 is 40222818381.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428284 + ... + 469244.

It is an arithmetic number, because the mean of its divisors is an integer number (1787213022).

Almost surely, 2^18381822204 is an apocalyptic number.

It is an amenable number.

18381822204 is an abundant number, since it is smaller than the sum of its proper divisors (24511290324).

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

18381822204 is a wasteful number, since it uses less digits than its factorization.

18381822204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78365 (or 78363 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The spelling of 18381822204 in words is "eighteen billion, three hundred eighty-one million, eight hundred twenty-two thousand, two hundred four".