9163958640 has 320 divisors, whose sum is σ = 29968081920. Its totient is φ = 2314690560.

The previous prime is 9163958623. The next prime is 9163958641. The reversal of 9163958640 is 468593619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9163958641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65927691 + ... + 65927829.

It is an arithmetic number, because the mean of its divisors is an integer number (93650256).

Almost surely, 2^9163958640 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 9163958640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14984040960).

9163958640 is an abundant number, since it is smaller than the sum of its proper divisors (20804123280).

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

9163958640 is a wasteful number, since it uses less digits than its factorization.

9163958640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 9163958640 is about 95728.5675229709. The cubic root of 9163958640 is about 2092.6392822190.

The spelling of 9163958640 in words is "nine billion, one hundred sixty-three million, nine hundred fifty-eight thousand, six hundred forty".