2228189 has 2 divisors, whose sum is σ = 2228190. Its totient is φ = 2228188.

The previous prime is 2228183. The next prime is 2228201. The reversal of 2228189 is 9818222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2199289 + 28900 = 1483^2 + 170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2228189 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2228183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1114094 + 1114095.

It is an arithmetic number, because the mean of its divisors is an integer number (1114095).

2^2228189 is an apocalyptic number.

It is an amenable number.

2228189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2228189 is an equidigital number, since it uses as much as digits as its factorization.

2228189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 32.

The square root of 2228189 is about 1492.7119614983. The cubic root of 2228189 is about 130.6122793867.

The spelling of 2228189 in words is "two million, two hundred twenty-eight thousand, one hundred eighty-nine".