9925841816 has 32 divisors (see below), whose sum is σ = 21497147280. Its totient is φ = 4246348800.

The previous prime is 9925841791. The next prime is 9925841879. The reversal of 9925841816 is 6181485299.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3315965 + ... + 3318956.

Almost surely, 2^9925841816 is an apocalyptic number.

It is an amenable number.

9925841816 is an abundant number, since it is smaller than the sum of its proper divisors (11571305464).

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

9925841816 is a wasteful number, since it uses less digits than its factorization.

9925841816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6634955 (or 6634951 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 53.

The square root of 9925841816 is about 99628.5190896663. The cubic root of 9925841816 is about 2149.0958387464.

The spelling of 9925841816 in words is "nine billion, nine hundred twenty-five million, eight hundred forty-one thousand, eight hundred sixteen".