18086934528 has 240 divisors, whose sum is σ = 58186968840. Its totient is φ = 5564547072.

The previous prime is 18086934527. The next prime is 18086934583. The reversal of 18086934528 is 82543968081.

18086934528 is a `hidden beast` number, since 1 + 8 + 0 + 86 + 9 + 34 + 528 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18086934521) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2152351 + ... + 2160737.

Almost surely, 2^18086934528 is an apocalyptic number.

18086934528 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 18086934528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29093484420).

18086934528 is an abundant number, since it is smaller than the sum of its proper divisors (40100034312).

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

18086934528 is an equidigital number, since it uses as much as digits as its factorization.

18086934528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8434 (or 8405 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 18086934528 in words is "eighteen billion, eighty-six million, nine hundred thirty-four thousand, five hundred twenty-eight".