18101081684 has 96 divisors (see below), whose sum is σ = 37876075776. Its totient is φ = 7408558080.

The previous prime is 18101081657. The next prime is 18101081693. The reversal of 18101081684 is 48618010181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14174054 + ... + 14175330.

It is an arithmetic number, because the mean of its divisors is an integer number (394542456).

Almost surely, 2^18101081684 is an apocalyptic number.

18101081684 is a gapful number since it is divisible by the number (14) 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 18101081684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18938037888).

18101081684 is an abundant number, since it is smaller than the sum of its proper divisors (19774994092).

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

18101081684 is a wasteful number, since it uses less digits than its factorization.

18101081684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585 (or 1583 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 38.

The spelling of 18101081684 in words is "eighteen billion, one hundred one million, eighty-one thousand, six hundred eighty-four".