8669378818 has 4 divisors (see below), whose sum is σ = 13004068230. Its totient is φ = 4334689408.

The previous prime is 8669378807. The next prime is 8669378819. The reversal of 8669378818 is 8188739668.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8356336569 + 313042249 = 91413^2 + 17693^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8669378818.

It is not an unprimeable number, because it can be changed into a prime (8669378819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2167344703 + ... + 2167344706.

Almost surely, 2^8669378818 is an apocalyptic number.

8669378818 is a deficient number, since it is larger than the sum of its proper divisors (4334689412).

8669378818 is a wasteful number, since it uses less digits than its factorization.

8669378818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4334689411.

The product of its digits is 27869184, while the sum is 64.

The square root of 8669378818 is about 93109.4990750138. The cubic root of 8669378818 is about 2054.2942952080.

The spelling of 8669378818 in words is "eight billion, six hundred sixty-nine million, three hundred seventy-eight thousand, eight hundred eighteen".