18285986322 has 18 divisors (see below), whose sum is σ = 39620880117. Its totient is φ = 6095137536.

The previous prime is 18285986321. The next prime is 18285986351. The reversal of 18285986322 is 22368958281.

It is a happy number.

18285986322 is a `hidden beast` number, since 1 + 8 + 28 + 598 + 6 + 3 + 22 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16716162681 + 1569823641 = 129291^2 + 39621^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=95619.

It is not an unprimeable number, because it can be changed into a prime (18285986321) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 557778 + ... + 589650.

Almost surely, 2^18285986322 is an apocalyptic number.

18285986322 is an abundant number, since it is smaller than the sum of its proper divisors (21334893795).

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

18285986322 is an frugal number, since it uses more digits than its factorization.

18285986322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63754 (or 31878 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 18285986322 in words is "eighteen billion, two hundred eighty-five million, nine hundred eighty-six thousand, three hundred twenty-two".