8218536968 has 16 divisors (see below), whose sum is σ = 15582901500. Its totient is φ = 4063096576.

The previous prime is 8218536919. The next prime is 8218536973. The reversal of 8218536968 is 8696358128.

It can be written as a sum of positive squares in 2 ways, for example, as 7769012164 + 449524804 = 88142^2 + 21202^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5770733 + ... + 5772156.

Almost surely, 2^8218536968 is an apocalyptic number.

It is an amenable number.

8218536968 is a deficient number, since it is larger than the sum of its proper divisors (7364364532).

8218536968 is a wasteful number, since it uses less digits than its factorization.

8218536968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11542984 (or 11542980 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 56.

The square root of 8218536968 is about 90656.1468848086. The cubic root of 8218536968 is about 2018.0480578999.

The spelling of 8218536968 in words is "eight billion, two hundred eighteen million, five hundred thirty-six thousand, nine hundred sixty-eight".