9718961280 has 256 divisors, whose sum is σ = 36548444160. Its totient is φ = 2149724160.

The previous prime is 9718961279. The next prime is 9718961321. The reversal of 9718961280 is 821698179.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 404977 + ... + 428303.

It is an arithmetic number, because the mean of its divisors is an integer number (142767360).

Almost surely, 2^9718961280 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 9718961280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18274222080).

9718961280 is an abundant number, since it is smaller than the sum of its proper divisors (26829482880).

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

9718961280 is a wasteful number, since it uses less digits than its factorization.

9718961280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23387 (or 23375 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 51.

The square root of 9718961280 is about 98584.7923363436. The cubic root of 9718961280 is about 2134.0599590762.

The spelling of 9718961280 in words is "nine billion, seven hundred eighteen million, nine hundred sixty-one thousand, two hundred eighty".