18119992800 has 576 divisors, whose sum is σ = 73180316160. Its totient is φ = 3792199680.

The previous prime is 18119992799. The next prime is 18119992801. The reversal of 18119992800 is 829991181.

It is an interprime number because it is at equal distance from previous prime (18119992799) and next prime (18119992801).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 18119992800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18119992801) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 35598946 + ... + 35599454.

It is an arithmetic number, because the mean of its divisors is an integer number (127049160).

Almost surely, 2^18119992800 is an apocalyptic number.

18119992800 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 18119992800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36590158080).

18119992800 is an abundant number, since it is smaller than the sum of its proper divisors (55060323360).

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

18119992800 is a wasteful number, since it uses less digits than its factorization.

18119992800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 48.

The spelling of 18119992800 in words is "eighteen billion, one hundred nineteen million, nine hundred ninety-two thousand, eight hundred".