18041446722 has 32 divisors (see below), whose sum is σ = 38895030720. Its totient is φ = 5545995840.

The previous prime is 18041446699. The next prime is 18041446763. The reversal of 18041446722 is 22764414081.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24804 + ... + 191567.

It is an arithmetic number, because the mean of its divisors is an integer number (1215469710).

Almost surely, 2^18041446722 is an apocalyptic number.

18041446722 is an abundant number, since it is smaller than the sum of its proper divisors (20853583998).

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

18041446722 is a wasteful number, since it uses less digits than its factorization.

18041446722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217458.

The product of its (nonzero) digits is 86016, while the sum is 39.

The spelling of 18041446722 in words is "eighteen billion, forty-one million, four hundred forty-six thousand, seven hundred twenty-two".