18183438000 has 960 divisors, whose sum is σ = 82889194752. Its totient is φ = 3605299200.

The previous prime is 18183437959. The next prime is 18183438019. The reversal of 18183438000 is 83438181.

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

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, 27845674 + ... + 27846326.

Almost surely, 2^18183438000 is an apocalyptic number.

18183438000 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 18183438000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41444597376).

18183438000 is an abundant number, since it is smaller than the sum of its proper divisors (64705756752).

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

18183438000 is a wasteful number, since it uses less digits than its factorization.

18183438000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 18183438000 in words is "eighteen billion, one hundred eighty-three million, four hundred thirty-eight thousand".