18718920000 has 840 divisors, whose sum is σ = 76128006240. Its totient is φ = 4354560000.

The previous prime is 18718919993. The next prime is 18718920019. The reversal of 18718920000 is 2981781.

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 119 ways as a sum of consecutive naturals, for example, 114839919 + ... + 114840081.

Almost surely, 2^18718920000 is an apocalyptic number.

18718920000 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 18718920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38064003120).

18718920000 is an abundant number, since it is smaller than the sum of its proper divisors (57409086240).

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

18718920000 is a wasteful number, since it uses less digits than its factorization.

18718920000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The spelling of 18718920000 in words is "eighteen billion, seven hundred eighteen million, nine hundred twenty thousand".