18489318200 has 96 divisors (see below), whose sum is σ = 45133718400. Its totient is φ = 7030488960.

The previous prime is 18489318193. The next prime is 18489318217. The reversal of 18489318200 is 281398481.

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, 737471 + ... + 762129.

It is an arithmetic number, because the mean of its divisors is an integer number (470142900).

Almost surely, 2^18489318200 is an apocalyptic number.

18489318200 is a gapful number since it is divisible by the number (10) 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 18489318200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22566859200).

18489318200 is an abundant number, since it is smaller than the sum of its proper divisors (26644400200).

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

18489318200 is a wasteful number, since it uses less digits than its factorization.

18489318200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24861 (or 24852 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The spelling of 18489318200 in words is "eighteen billion, four hundred eighty-nine million, three hundred eighteen thousand, two hundred".