8919856668 has 24 divisors (see below), whose sum is σ = 20862447760. Its totient is φ = 2966221440.

The previous prime is 8919856657. The next prime is 8919856681. The reversal of 8919856668 is 8666589198.

It is a junction number, because it is equal to n+sod(n) for n = 8919856599 and 8919856608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877753 + ... + 887856.

Almost surely, 2^8919856668 is an apocalyptic number.

It is an amenable number.

8919856668 is an abundant number, since it is smaller than the sum of its proper divisors (11942591092).

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

8919856668 is a wasteful number, since it uses less digits than its factorization.

8919856668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766037 (or 1766035 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 66.

The square root of 8919856668 is about 94444.9928159243. The cubic root of 8919856668 is about 2073.8911513383.

The spelling of 8919856668 in words is "eight billion, nine hundred nineteen million, eight hundred fifty-six thousand, six hundred sixty-eight".