8818189 has 4 divisors (see below), whose sum is σ = 9336924. Its totient is φ = 8299456.

The previous prime is 8818163. The next prime is 8818207. The reversal of 8818189 is 9818188.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5560164 + 3258025 = 2358^2 + 1805^2 .

It is a cyclic number.

It is not a de Polignac number, because 8818189 - 2¹⁵ = 8785421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8818289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259342 + ... + 259375.

It is an arithmetic number, because the mean of its divisors is an integer number (2334231).

Almost surely, 2^8818189 is an apocalyptic number.

It is an amenable number.

8818189 is a deficient number, since it is larger than the sum of its proper divisors (518735).

8818189 is a wasteful number, since it uses less digits than its factorization.

8818189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518734.

The product of its digits is 36864, while the sum is 43.

The square root of 8818189 is about 2969.5435676211. The cubic root of 8818189 is about 206.5981687088.

Subtracting 8818189 from its reverse (9818188), we obtain a palindrome (999999).

The spelling of 8818189 in words is "eight million, eight hundred eighteen thousand, one hundred eighty-nine".