18253867984 has 20 divisors (see below), whose sum is σ = 38582039520. Its totient is φ = 8297212640.

The previous prime is 18253867939. The next prime is 18253867991. The reversal of 18253867984 is 48976835281.

It is a congruent number.

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, 51857404 + ... + 51857755.

It is an arithmetic number, because the mean of its divisors is an integer number (1929101976).

Almost surely, 2^18253867984 is an apocalyptic number.

It is an amenable number.

18253867984 is an abundant number, since it is smaller than the sum of its proper divisors (20328171536).

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

18253867984 is a wasteful number, since it uses less digits than its factorization.

18253867984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103715178 (or 103715172 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 61.

The spelling of 18253867984 in words is "eighteen billion, two hundred fifty-three million, eight hundred sixty-seven thousand, nine hundred eighty-four".