18386332322 has 6 divisors (see below), whose sum is σ = 27579786129. Its totient is φ = 9193070280.

The previous prime is 18386332297. The next prime is 18386332351. The reversal of 18386332322 is 22323368381.

It can be written as a sum of positive squares in 2 ways, for example, as 11543568481 + 6842763841 = 107441^2 + 82721^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=95881.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18386332322.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 143822 + ... + 239702.

Almost surely, 2^18386332322 is an apocalyptic number.

18386332322 is a deficient number, since it is larger than the sum of its proper divisors (9193453807).

18386332322 is an frugal number, since it uses more digits than its factorization.

18386332322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191764 (or 95883 counting only the distinct ones).

The product of its digits is 248832, while the sum is 41.

The spelling of 18386332322 in words is "eighteen billion, three hundred eighty-six million, three hundred thirty-two thousand, three hundred twenty-two".