9840425868 has 216 divisors, whose sum is σ = 30947935200. Its totient is φ = 2581383168.

The previous prime is 9840425851. The next prime is 9840425891. The reversal of 9840425868 is 8685240489.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9752148 + ... + 9753156.

Almost surely, 2^9840425868 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 9840425868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15473967600).

9840425868 is an abundant number, since it is smaller than the sum of its proper divisors (21107509332).

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

9840425868 is a wasteful number, since it uses less digits than its factorization.

9840425868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281 (or 1263 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The square root of 9840425868 is about 99198.9206997737. The cubic root of 9840425868 is about 2142.9134530650.

The spelling of 9840425868 in words is "nine billion, eight hundred forty million, four hundred twenty-five thousand, eight hundred sixty-eight".