19381822000 has 80 divisors (see below), whose sum is σ = 47076486912. Its totient is φ = 7717785600.

The previous prime is 19381821989. The next prime is 19381822063. The reversal of 19381822000 is 22818391.

It is a tau number, because it is divible by the number of its divisors (80).

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, 424272 + ... + 467728.

Almost surely, 2^19381822000 is an apocalyptic number.

19381822000 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 19381822000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23538243456).

19381822000 is an abundant number, since it is smaller than the sum of its proper divisors (27694664912).

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

19381822000 is a wasteful number, since it uses less digits than its factorization.

19381822000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43703 (or 43687 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 19381822000 in words is "nineteen billion, three hundred eighty-one million, eight hundred twenty-two thousand".