9881814016 has 44 divisors (see below), whose sum is σ = 19770294460. Its totient is φ = 4936826880.

The previous prime is 9881813989. The next prime is 9881814031. The reversal of 9881814016 is 6104181889.

It can be written as a sum of positive squares in 2 ways, for example, as 6196838400 + 3684975616 = 78720^2 + 60704^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1521496 + ... + 1527976.

Almost surely, 2^9881814016 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 9881814016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9885147230).

9881814016 is an abundant number, since it is smaller than the sum of its proper divisors (9888480444).

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

9881814016 is a wasteful number, since it uses less digits than its factorization.

9881814016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7990 (or 7972 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 46.

The square root of 9881814016 is about 99407.3136947177. The cubic root of 9881814016 is about 2145.9135659676.

The spelling of 9881814016 in words is "nine billion, eight hundred eighty-one million, eight hundred fourteen thousand, sixteen".