8218241856 has 280 divisors, whose sum is σ = 27439315200. Its totient is φ = 2409523200.

The previous prime is 8218241839. The next prime is 8218241873. The reversal of 8218241856 is 6581428128.

8218241856 is a `hidden beast` number, since 8 + 2 + 182 + 418 + 56 = 666.

It is an interprime number because it is at equal distance from previous prime (8218241839) and next prime (8218241873).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1765420 + ... + 1770068.

Almost surely, 2^8218241856 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 8218241856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13719657600).

8218241856 is an abundant number, since it is smaller than the sum of its proper divisors (19221073344).

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

8218241856 is a wasteful number, since it uses less digits than its factorization.

8218241856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4715 (or 4696 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The square root of 8218241856 is about 90654.5192254639. The cubic root of 8218241856 is about 2018.0239028575.

The spelling of 8218241856 in words is "eight billion, two hundred eighteen million, two hundred forty-one thousand, eight hundred fifty-six".