18049082080 has 96 divisors (see below), whose sum is σ = 43004231424. Its totient is φ = 7158398976.

The previous prime is 18049082069. The next prime is 18049082111. The reversal of 18049082080 is 8028094081.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11517457 + ... + 11519023.

It is an arithmetic number, because the mean of its divisors is an integer number (447960744).

Almost surely, 2^18049082080 is an apocalyptic number.

18049082080 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 18049082080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21502115712).

18049082080 is an abundant number, since it is smaller than the sum of its proper divisors (24955149344).

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

18049082080 is a wasteful number, since it uses less digits than its factorization.

18049082080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148 (or 2140 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 40.

The spelling of 18049082080 in words is "eighteen billion, forty-nine million, eighty-two thousand, eighty".