9644002368 has 672 divisors, whose sum is σ = 36417991680. Its totient is φ = 2174791680.

The previous prime is 9644002343. The next prime is 9644002391. The reversal of 9644002368 is 8632004469.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-3 number, since 3×9644002368³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 69381243 + ... + 69381381.

It is an arithmetic number, because the mean of its divisors is an integer number (54193440).

Almost surely, 2^9644002368 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 9644002368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18208995840).

9644002368 is an abundant number, since it is smaller than the sum of its proper divisors (26773989312).

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

9644002368 is a wasteful number, since it uses less digits than its factorization.

9644002368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 9644002368 is about 98203.8816340780. The cubic root of 9644002368 is about 2128.5593767561.

The spelling of 9644002368 in words is "nine billion, six hundred forty-four million, two thousand, three hundred sixty-eight".