9788663808 has 768 divisors, whose sum is σ = 38368512000. Its totient is φ = 2408693760.

The previous prime is 9788663803. The next prime is 9788663831. The reversal of 9788663808 is 8083668879.

It is a tau number, because it is divible by the number of its divisors (768).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (9788663803) 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, 515192823 + ... + 515192841.

It is an arithmetic number, because the mean of its divisors is an integer number (49959000).

Almost surely, 2^9788663808 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 9788663808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19184256000).

9788663808 is an abundant number, since it is smaller than the sum of its proper divisors (28579848192).

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

9788663808 is a wasteful number, since it uses less digits than its factorization.

9788663808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The square root of 9788663808 is about 98937.6763826602. The cubic root of 9788663808 is about 2139.1495010276.

The spelling of 9788663808 in words is "nine billion, seven hundred eighty-eight million, six hundred sixty-three thousand, eight hundred eight".