418189 has 2 divisors, whose sum is σ = 418190. Its totient is φ = 418188.

The previous prime is 418181. The next prime is 418199. The reversal of 418189 is 981814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233289 + 184900 = 483^2 + 430^2 .

It is a cyclic number.

It is not a de Polignac number, because 418189 - 2³ = 418181 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 418189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (418181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209094 + 209095.

It is an arithmetic number, because the mean of its divisors is an integer number (209095).

2⁴¹⁸¹⁸⁹ is an apocalyptic number.

It is an amenable number.

418189 is a deficient number, since it is larger than the sum of its proper divisors (1).

418189 is an equidigital number, since it uses as much as digits as its factorization.

418189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 31.

The square root of 418189 is about 646.6753435844. The cubic root of 418189 is about 74.7809311110.

The spelling of 418189 in words is "four hundred eighteen thousand, one hundred eighty-nine".