18422089984 has 81 divisors (see below), whose sum is σ = 39140968377. Its totient is φ = 8651845632.

The previous prime is 18422089979. The next prime is 18422089993. The reversal of 18422089984 is 48998022481.

The square root of 18422089984 is 135728.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14342457600 + 4079632384 = 119760^2 + 63872^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 36917767 + ... + 36918265.

Almost surely, 2^18422089984 is an apocalyptic number.

18422089984 is the 135728-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18422089984

18422089984 is an abundant number, since it is smaller than the sum of its proper divisors (20718878393).

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

18422089984 is an frugal number, since it uses more digits than its factorization.

18422089984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 55.

The spelling of 18422089984 in words is "eighteen billion, four hundred twenty-two million, eighty-nine thousand, nine hundred eighty-four".