18502089984 has 288 divisors, whose sum is σ = 63315598080. Its totient is φ = 5285191680.

The previous prime is 18502089959. The next prime is 18502089997. The reversal of 18502089984 is 48998020581.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 18502089984.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3916744 + ... + 3921464.

Almost surely, 2^18502089984 is an apocalyptic number.

18502089984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18502089984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31657799040).

18502089984 is an abundant number, since it is smaller than the sum of its proper divisors (44813508096).

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

18502089984 is an frugal number, since it uses more digits than its factorization.

18502089984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765 (or 4733 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 18502089984 in words is "eighteen billion, five hundred two million, eighty-nine thousand, nine hundred eighty-four".