9690981888 has 320 divisors, whose sum is σ = 30571757568. Its totient is φ = 2670796800.

The previous prime is 9690981829. The next prime is 9690981941. The reversal of 9690981888 is 8881890969.

It is a happy number.

It is a congruent number.

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, 64178613 + ... + 64178763.

Almost surely, 2^9690981888 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 9690981888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15285878784).

9690981888 is an abundant number, since it is smaller than the sum of its proper divisors (20880775680).

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

9690981888 is a wasteful number, since it uses less digits than its factorization.

9690981888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 66.

The square root of 9690981888 is about 98442.7848448021. The cubic root of 9690981888 is about 2132.0101141533.

The spelling of 9690981888 in words is "nine billion, six hundred ninety million, nine hundred eighty-one thousand, eight hundred eighty-eight".