9918325656 has 48 divisors (see below), whose sum is σ = 27042444000. Its totient is φ = 3283916352.

The previous prime is 9918325649. The next prime is 9918325661. The reversal of 9918325656 is 6565238199.

It is a happy number.

9918325656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 451536 + ... + 472991.

It is an arithmetic number, because the mean of its divisors is an integer number (563384250).

Almost surely, 2^9918325656 is an apocalyptic number.

It is an amenable number.

9918325656 is an abundant number, since it is smaller than the sum of its proper divisors (17124118344).

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

9918325656 is a wasteful number, since it uses less digits than its factorization.

9918325656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924688 (or 924681 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The square root of 9918325656 is about 99590.7910200537. The cubic root of 9918325656 is about 2148.5532474187.

The spelling of 9918325656 in words is "nine billion, nine hundred eighteen million, three hundred twenty-five thousand, six hundred fifty-six".