19880213250 has 128 divisors (see below), whose sum is σ = 51184224000. Its totient is φ = 5136192000.

The previous prime is 19880213179. The next prime is 19880213273. The reversal of 19880213250 is 5231208891.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19880213199 and 19880213208.

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 63 ways as a sum of consecutive naturals, for example, 4579581 + ... + 4583919.

It is an arithmetic number, because the mean of its divisors is an integer number (399876750).

Almost surely, 2^19880213250 is an apocalyptic number.

19880213250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19880213250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25592112000).

19880213250 is an abundant number, since it is smaller than the sum of its proper divisors (31304010750).

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

19880213250 is a wasteful number, since it uses less digits than its factorization.

19880213250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549 (or 4539 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 19880213250 in words is "nineteen billion, eight hundred eighty million, two hundred thirteen thousand, two hundred fifty".