19180859880 has 384 divisors, whose sum is σ = 73325347200. Its totient is φ = 3977422848.

The previous prime is 19180859857. The next prime is 19180859933. The reversal of 19180859880 is 8895808191.

It is a super-2 number, since 2×19180859880² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19180859880.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4507834 + ... + 4512086.

It is an arithmetic number, because the mean of its divisors is an integer number (190951425).

Almost surely, 2^19180859880 is an apocalyptic number.

19180859880 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 19180859880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36662673600).

19180859880 is an abundant number, since it is smaller than the sum of its proper divisors (54144487320).

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

19180859880 is a wasteful number, since it uses less digits than its factorization.

19180859880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353 (or 4342 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 57.

The spelling of 19180859880 in words is "nineteen billion, one hundred eighty million, eight hundred fifty-nine thousand, eight hundred eighty".