18085013740 has 96 divisors (see below), whose sum is σ = 39891253248. Its totient is φ = 6878976000.

The previous prime is 18085013707. The next prime is 18085013759. The reversal of 18085013740 is 4731058081.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18085013740.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8689500 + ... + 8691580.

It is an arithmetic number, because the mean of its divisors is an integer number (415533888).

Almost surely, 2^18085013740 is an apocalyptic number.

18085013740 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 18085013740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19945626624).

18085013740 is an abundant number, since it is smaller than the sum of its proper divisors (21806239508).

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

18085013740 is a wasteful number, since it uses less digits than its factorization.

18085013740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 18085013740 in words is "eighteen billion, eighty-five million, thirteen thousand, seven hundred forty".