18210074688 has 168 divisors, whose sum is σ = 59517902808. Its totient is φ = 5273468928.

The previous prime is 18210074657. The next prime is 18210074693. The reversal of 18210074688 is 88647001281.

18210074688 is a `hidden beast` number, since 1 + 82 + 100 + 7 + 468 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7619194944 + 10590879744 = 87288^2 + 102912^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55770 + ... + 198822.

It is an arithmetic number, because the mean of its divisors is an integer number (354273231).

Almost surely, 2^18210074688 is an apocalyptic number.

18210074688 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 18210074688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29758951404).

18210074688 is an abundant number, since it is smaller than the sum of its proper divisors (41307828120).

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

18210074688 is a wasteful number, since it uses less digits than its factorization.

18210074688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143101 (or 143088 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 18210074688 in words is "eighteen billion, two hundred ten million, seventy-four thousand, six hundred eighty-eight".