18303840000 has 720 divisors, whose sum is σ = 71517107200. Its totient is φ = 4603392000.

The previous prime is 18303839987. The next prime is 18303840047. The reversal of 18303840000 is 4830381.

It is a tau number, because it is divible by the number of its divisors (720).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 82079889 + ... + 82080111.

Almost surely, 2^18303840000 is an apocalyptic number.

18303840000 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 18303840000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35758553600).

18303840000 is an abundant number, since it is smaller than the sum of its proper divisors (53213267200).

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

18303840000 is an equidigital number, since it uses as much as digits as its factorization.

18303840000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 18303840000 in words is "eighteen billion, three hundred three million, eight hundred forty thousand".