8649946368 has 576 divisors, whose sum is σ = 30977228800. Its totient is φ = 2329067520.

The previous prime is 8649946351. The next prime is 8649946387. The reversal of 8649946368 is 8636499468.

8649946368 is a `hidden beast` number, since 86 + 4 + 99 + 463 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 109492953 + ... + 109493031.

Almost surely, 2^8649946368 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 8649946368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15488614400).

8649946368 is an abundant number, since it is smaller than the sum of its proper divisors (22327282432).

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

8649946368 is a wasteful number, since it uses less digits than its factorization.

8649946368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 195 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 63.

The square root of 8649946368 is about 93005.0878608262. The cubic root of 8649946368 is about 2052.7582437737.

The spelling of 8649946368 in words is "eight billion, six hundred forty-nine million, nine hundred forty-six thousand, three hundred sixty-eight".