19850880000 has 660 divisors, whose sum is σ = 77275101552. Its totient is φ = 4515840000.

The previous prime is 19850879969. The next prime is 19850880041. The reversal of 19850880000 is 8805891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 94079895 + ... + 94080105.

Almost surely, 2^19850880000 is an apocalyptic number.

19850880000 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 19850880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38637550776).

19850880000 is an abundant number, since it is smaller than the sum of its proper divisors (57424221552).

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

19850880000 is an equidigital number, since it uses as much as digits as its factorization.

19850880000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 39.

The spelling of 19850880000 in words is "nineteen billion, eight hundred fifty million, eight hundred eighty thousand".