19942020288 has 224 divisors, whose sum is σ = 61945113600. Its totient is φ = 6280823808.

The previous prime is 19942020283. The next prime is 19942020337. The reversal of 19942020288 is 88202024991.

It is a happy number.

19942020288 is a `hidden beast` number, since 19 + 9 + 420 + 202 + 8 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (19942020283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2351031 + ... + 2359497.

Almost surely, 2^19942020288 is an apocalyptic number.

19942020288 is a gapful number since it is divisible by the number (18) 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 19942020288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30972556800).

19942020288 is an abundant number, since it is smaller than the sum of its proper divisors (42003093312).

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

19942020288 is a wasteful number, since it uses less digits than its factorization.

19942020288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8564 (or 8548 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 19942020288 in words is "nineteen billion, nine hundred forty-two million, twenty thousand, two hundred eighty-eight".