8367681856 has 28 divisors (see below), whose sum is σ = 16666380180. Its totient is φ = 4168279040.

The previous prime is 8367681827. The next prime is 8367681857. The reversal of 8367681856 is 6581867638.

It can be written as a sum of positive squares in 2 ways, for example, as 749883456 + 7617798400 = 27384^2 + 87280^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8367681856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8367681857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225805 + ... + 260236.

Almost surely, 2^8367681856 is an apocalyptic number.

It is an amenable number.

8367681856 is a deficient number, since it is larger than the sum of its proper divisors (8298698324).

8367681856 is a wasteful number, since it uses less digits than its factorization.

8367681856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486322 (or 486312 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 58.

The square root of 8367681856 is about 91475.0340584796. The cubic root of 8367681856 is about 2030.1823754872.

The spelling of 8367681856 in words is "eight billion, three hundred sixty-seven million, six hundred eighty-one thousand, eight hundred fifty-six".