19889783382 has 32 divisors (see below), whose sum is σ = 45887254272. Its totient is φ = 5629683744.

The previous prime is 19889783377. The next prime is 19889783383. The reversal of 19889783382 is 28338798891.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19889783383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2208433 + ... + 2217420.

It is an arithmetic number, because the mean of its divisors is an integer number (1433976696).

Almost surely, 2^19889783382 is an apocalyptic number.

19889783382 is an abundant number, since it is smaller than the sum of its proper divisors (25997470890).

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

19889783382 is a wasteful number, since it uses less digits than its factorization.

19889783382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425972.

The product of its digits is 41803776, while the sum is 66.

The spelling of 19889783382 in words is "nineteen billion, eight hundred eighty-nine million, seven hundred eighty-three thousand, three hundred eighty-two".