18319950000 has 360 divisors, whose sum is σ = 69928618032. Its totient is φ = 4440000000.

The previous prime is 18319949969. The next prime is 18319950059. The reversal of 18319950000 is 5991381.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (360).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4948150 + ... + 4951850.

Almost surely, 2^18319950000 is an apocalyptic number.

18319950000 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 18319950000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34964309016).

18319950000 is an abundant number, since it is smaller than the sum of its proper divisors (51608668032).

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

18319950000 is a wasteful number, since it uses less digits than its factorization.

18319950000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3751 (or 3722 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The spelling of 18319950000 in words is "eighteen billion, three hundred nineteen million, nine hundred fifty thousand".