18285277984 has 24 divisors (see below), whose sum is σ = 36091708380. Its totient is φ = 9119129856.

The previous prime is 18285277973. The next prime is 18285277993. The reversal of 18285277984 is 48977258281.

It can be written as a sum of positive squares in 2 ways, for example, as 18111776400 + 173501584 = 134580^2 + 13172^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722019 + ... + 746914.

Almost surely, 2^18285277984 is an apocalyptic number.

It is an amenable number.

18285277984 is a deficient number, since it is larger than the sum of its proper divisors (17806430396).

18285277984 is a wasteful number, since it uses less digits than its factorization.

18285277984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469332 (or 1469324 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 61.

The spelling of 18285277984 in words is "eighteen billion, two hundred eighty-five million, two hundred seventy-seven thousand, nine hundred eighty-four".