18219438022 has 16 divisors (see below), whose sum is σ = 27437810400. Its totient is φ = 9073546240.

The previous prime is 18219438001. The next prime is 18219438049. The reversal of 18219438022 is 22083491281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866004 + ... + 886792.

It is an arithmetic number, because the mean of its divisors is an integer number (1714863150).

Almost surely, 2^18219438022 is an apocalyptic number.

18219438022 is a deficient number, since it is larger than the sum of its proper divisors (9218372378).

18219438022 is a wasteful number, since it uses less digits than its factorization.

18219438022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22511.

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 18219438022 in words is "eighteen billion, two hundred nineteen million, four hundred thirty-eight thousand, twenty-two".