18422382390 has 16 divisors (see below), whose sum is σ = 44213717808. Its totient is φ = 4912635296.

The previous prime is 18422382379. The next prime is 18422382403. The reversal of 18422382390 is 9328322481.

It is a super-2 number, since 2×18422382390² (a number of 21 digits) contains 22 as substring.

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, 307039677 + ... + 307039736.

It is an arithmetic number, because the mean of its divisors is an integer number (2763357363).

Almost surely, 2^18422382390 is an apocalyptic number.

18422382390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18422382390 is an abundant number, since it is smaller than the sum of its proper divisors (25791335418).

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

18422382390 is a wasteful number, since it uses less digits than its factorization.

18422382390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614079423.

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 18422382390 in words is "eighteen billion, four hundred twenty-two million, three hundred eighty-two thousand, three hundred ninety".