9917490168 has 144 divisors (see below), whose sum is σ = 27746507880. Its totient is φ = 3198988416.

The previous prime is 9917490161. The next prime is 9917490181. The reversal of 9917490168 is 8610947199.

9917490168 is a `hidden beast` number, since 9 + 91 + 7 + 490 + 1 + 68 = 666.

9917490168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9917490168² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9917490161) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 43689271 + ... + 43689497.

Almost surely, 2^9917490168 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 9917490168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13873253940).

9917490168 is an abundant number, since it is smaller than the sum of its proper divisors (17829017712).

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

9917490168 is a wasteful number, since it uses less digits than its factorization.

9917490168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The square root of 9917490168 is about 99586.5963270158. The cubic root of 9917490168 is about 2148.4929166423.

The spelling of 9917490168 in words is "nine billion, nine hundred seventeen million, four hundred ninety thousand, one hundred sixty-eight".