18727920000 has 720 divisors, whose sum is σ = 72854882100. Its totient is φ = 4603392000.

The previous prime is 18727919971. The next prime is 18727920047. The reversal of 18727920000 is 2972781.

18727920000 is a `hidden beast` number, since 187 + 279 + 200 + 0 + 0 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 506159982 + ... + 506160018.

Almost surely, 2^18727920000 is an apocalyptic number.

18727920000 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 18727920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36427441050).

18727920000 is an abundant number, since it is smaller than the sum of its proper divisors (54126962100).

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

18727920000 is an equidigital number, since it uses as much as digits as its factorization.

18727920000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The spelling of 18727920000 in words is "eighteen billion, seven hundred twenty-seven million, nine hundred twenty thousand".