18328863168 has 504 divisors, whose sum is σ = 68935549200. Its totient is φ = 4758082560.

The previous prime is 18328863121. The next prime is 18328863221. The reversal of 18328863168 is 86136882381.

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10244418 + ... + 10246206.

Almost surely, 2^18328863168 is an apocalyptic number.

18328863168 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 18328863168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34467774600).

18328863168 is an abundant number, since it is smaller than the sum of its proper divisors (50606686032).

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

18328863168 is a wasteful number, since it uses less digits than its factorization.

18328863168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846 (or 1812 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The spelling of 18328863168 in words is "eighteen billion, three hundred twenty-eight million, eight hundred sixty-three thousand, one hundred sixty-eight".