9788916780 has 36 divisors (see below), whose sum is σ = 29693048112. Its totient is φ = 2610377760.

The previous prime is 9788916773. The next prime is 9788916833. The reversal of 9788916780 is 876198879.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27191256 + ... + 27191615.

It is an arithmetic number, because the mean of its divisors is an integer number (824806892).

Almost surely, 2^9788916780 is an apocalyptic number.

9788916780 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9788916780 is an abundant number, since it is smaller than the sum of its proper divisors (19904131332).

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

9788916780 is a wasteful number, since it uses less digits than its factorization.

9788916780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54382886 (or 54382881 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 63.

The square root of 9788916780 is about 98938.9548155831. The cubic root of 9788916780 is about 2139.1679284751.

The spelling of 9788916780 in words is "nine billion, seven hundred eighty-eight million, nine hundred sixteen thousand, seven hundred eighty".