18785782080 has 672 divisors, whose sum is σ = 72852369408. Its totient is φ = 4412620800.

The previous prime is 18785782063. The next prime is 18785782121. The reversal of 18785782080 is 8028758781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 98354785 + ... + 98354975.

It is an arithmetic number, because the mean of its divisors is an integer number (108411264).

Almost surely, 2^18785782080 is an apocalyptic number.

18785782080 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 18785782080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36426184704).

18785782080 is an abundant number, since it is smaller than the sum of its proper divisors (54066587328).

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

18785782080 is a wasteful number, since it uses less digits than its factorization.

18785782080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 2007040, while the sum is 54.

The spelling of 18785782080 in words is "eighteen billion, seven hundred eighty-five million, seven hundred eighty-two thousand, eighty".