1208189 has 2 divisors, whose sum is σ = 1208190. Its totient is φ = 1208188.

The previous prime is 1208177. The next prime is 1208209. The reversal of 1208189 is 9818021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 940900 + 267289 = 970^2 + 517^2 .

It is a cyclic number.

It is not a de Polignac number, because 1208189 - 2⁸ = 1207933 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 (1208149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604094 + 604095.

It is an arithmetic number, because the mean of its divisors is an integer number (604095).

2^1208189 is an apocalyptic number.

It is an amenable number.

1208189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1208189 is an equidigital number, since it uses as much as digits as its factorization.

1208189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1208189 is about 1099.1765099382. The cubic root of 1208189 is about 106.5070344417.

The spelling of 1208189 in words is "one million, two hundred eight thousand, one hundred eighty-nine".