2012189 has 2 divisors, whose sum is σ = 2012190.
Its totient is φ = 2012188.
The previous prime is 2012173. The next prime is 2012203. The reversal of 2012189 is 9812102.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 1932100 + 80089 = 1390^2 + 283^2
It is a cyclic number.
It is not a de Polignac number, because 2012189 - 24 = 2012173 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2012159) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006094 + 1006095.
It is an arithmetic number, because the mean of its divisors is an integer number (1006095).
22012189 is an apocalyptic number.
It is an amenable number.
2012189 is a deficient number, since it is larger than the sum of its proper divisors (1).
2012189 is an equidigital number, since it uses as much as digits as its factorization.
2012189 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 288, while the sum is 23.
The square root of 2012189 is about 1418.5164785789.
The cubic root of 2012189 is about 126.2475397357.
The spelling of 2012189 in words is "two million, twelve thousand, one hundred eighty-nine".