18702420984 has 96 divisors (see below), whose sum is σ = 54594933120. Its totient is φ = 5749717248.

The previous prime is 18702420941. The next prime is 18702421007. The reversal of 18702420984 is 48902420781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1187449 + ... + 1203095.

It is an arithmetic number, because the mean of its divisors is an integer number (568697220).

Almost surely, 2^18702420984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18702420984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27297466560).

18702420984 is an abundant number, since it is smaller than the sum of its proper divisors (35892512136).

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

18702420984 is a wasteful number, since it uses less digits than its factorization.

18702420984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16949 (or 16942 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 18702420984 in words is "eighteen billion, seven hundred two million, four hundred twenty thousand, nine hundred eighty-four".