19894330848 has 288 divisors, whose sum is σ = 63089445888. Its totient is φ = 5467392000.

The previous prime is 19894330843. The next prime is 19894330871. The reversal of 19894330848 is 84803349891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19894330843) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33101748 + ... + 33102348.

It is an arithmetic number, because the mean of its divisors is an integer number (219060576).

Almost surely, 2^19894330848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19894330848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31544722944).

19894330848 is an abundant number, since it is smaller than the sum of its proper divisors (43195115040).

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

19894330848 is a wasteful number, since it uses less digits than its factorization.

19894330848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 57.

The spelling of 19894330848 in words is "nineteen billion, eight hundred ninety-four million, three hundred thirty thousand, eight hundred forty-eight".