18325219968 has 192 divisors, whose sum is σ = 59383584000. Its totient is φ = 5373849600.

The previous prime is 18325219963. The next prime is 18325219981. The reversal of 18325219968 is 86991252381.

18325219968 is a `hidden beast` number, since 18 + 325 + 219 + 96 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is not an unprimeable number, because it can be changed into a prime (18325219963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 369508 + ... + 416156.

It is an arithmetic number, because the mean of its divisors is an integer number (309289500).

Almost surely, 2^18325219968 is an apocalyptic number.

18325219968 is a gapful number since it is divisible by the number (18) 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 18325219968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29691792000).

18325219968 is an abundant number, since it is smaller than the sum of its proper divisors (41058364032).

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

18325219968 is a wasteful number, since it uses less digits than its factorization.

18325219968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46711 (or 46696 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The spelling of 18325219968 in words is "eighteen billion, three hundred twenty-five million, two hundred nineteen thousand, nine hundred sixty-eight".