4418189 has 2 divisors, whose sum is σ = 4418190. Its totient is φ = 4418188.

The previous prime is 4418171. The next prime is 4418191. The reversal of 4418189 is 9818144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3880900 + 537289 = 1970^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 4418189 - 2¹² = 4414093 is a prime.

Together with 4418191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4418149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2209094 + 2209095.

It is an arithmetic number, because the mean of its divisors is an integer number (2209095).

Almost surely, 2^4418189 is an apocalyptic number.

It is an amenable number.

4418189 is a deficient number, since it is larger than the sum of its proper divisors (1).

4418189 is an equidigital number, since it uses as much as digits as its factorization.

4418189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 35.

The square root of 4418189 is about 2101.9488576081. The cubic root of 4418189 is about 164.0897411878.

The spelling of 4418189 in words is "four million, four hundred eighteen thousand, one hundred eighty-nine".