9161397168 has 320 divisors, whose sum is σ = 31458557952. Its totient is φ = 2226723840.

The previous prime is 9161397137. The next prime is 9161397209. The reversal of 9161397168 is 8617931619.

It is a self number, because there is not a number n which added to its sum of digits gives 9161397168.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3994230 + ... + 3996522.

Almost surely, 2^9161397168 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 9161397168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15729278976).

9161397168 is an abundant number, since it is smaller than the sum of its proper divisors (22297160784).

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

9161397168 is a wasteful number, since it uses less digits than its factorization.

9161397168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2392 (or 2386 counting only the distinct ones).

The product of its digits is 489888, while the sum is 51.

The square root of 9161397168 is about 95715.1877603549. The cubic root of 9161397168 is about 2092.4442887437. Note that the first 3 decimals are identical.

The spelling of 9161397168 in words is "nine billion, one hundred sixty-one million, three hundred ninety-seven thousand, one hundred sixty-eight".