18271808960 has 56 divisors (see below), whose sum is σ = 43573238736. Its totient is φ = 7298058240.

The previous prime is 18271808939. The next prime is 18271808963. The reversal of 18271808960 is 6980817281.

It is a junction number, because it is equal to n+sod(n) for n = 18271808899 and 18271808908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18271808963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179804 + ... + 262436.

Almost surely, 2^18271808960 is an apocalyptic number.

18271808960 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 18271808960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21786619368).

18271808960 is an abundant number, since it is smaller than the sum of its proper divisors (25301429776).

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

18271808960 is an equidigital number, since it uses as much as digits as its factorization.

18271808960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83341 (or 83331 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 50.

The spelling of 18271808960 in words is "eighteen billion, two hundred seventy-one million, eight hundred eight thousand, nine hundred sixty".