19982699988 has 96 divisors (see below), whose sum is σ = 49926589440. Its totient is φ = 6202448640.

The previous prime is 19982699987. The next prime is 19982700011. The reversal of 19982699988 is 88999628991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19982699987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3214203 + ... + 3220413.

It is an arithmetic number, because the mean of its divisors is an integer number (520068640).

Almost surely, 2^19982699988 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 19982699988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24963294720).

19982699988 is an abundant number, since it is smaller than the sum of its proper divisors (29943889452).

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

19982699988 is a wasteful number, since it uses less digits than its factorization.

19982699988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6477 (or 6475 counting only the distinct ones).

The product of its digits is 362797056, while the sum is 78.

The spelling of 19982699988 in words is "nineteen billion, nine hundred eighty-two million, six hundred ninety-nine thousand, nine hundred eighty-eight".