18889416000 has 1344 divisors, whose sum is σ = 88136455680. Its totient is φ = 3856896000.

The previous prime is 18889415947. The next prime is 18889416037. The reversal of 18889416000 is 61498881.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 609335985 + ... + 609336015.

It is an arithmetic number, because the mean of its divisors is an integer number (65577720).

Almost surely, 2^18889416000 is an apocalyptic number.

18889416000 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 18889416000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44068227840).

18889416000 is an abundant number, since it is smaller than the sum of its proper divisors (69247039680).

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

18889416000 is a wasteful number, since it uses less digits than its factorization.

18889416000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 18889416000 in words is "eighteen billion, eight hundred eighty-nine million, four hundred sixteen thousand".