18095782320 has 1080 divisors, whose sum is σ = 81095715792. Its totient is φ = 3736212480.

The previous prime is 18095782319. The next prime is 18095782337. The reversal of 18095782320 is 2328759081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1080).

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

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 115259682 + ... + 115259838.

Almost surely, 2^18095782320 is an apocalyptic number.

18095782320 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 18095782320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40547857896).

18095782320 is an abundant number, since it is smaller than the sum of its proper divisors (62999933472).

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

18095782320 is a wasteful number, since it uses less digits than its factorization.

18095782320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 18095782320 in words is "eighteen billion, ninety-five million, seven hundred eighty-two thousand, three hundred twenty".