1097189 has 2 divisors, whose sum is σ = 1097190. Its totient is φ = 1097188.

The previous prime is 1097179. The next prime is 1097203. The reversal of 1097189 is 9817901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 432964 = 815^2 + 658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1097189 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 (1097179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548594 + 548595.

It is an arithmetic number, because the mean of its divisors is an integer number (548595).

2^1097189 is an apocalyptic number.

It is an amenable number.

1097189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097189 is an equidigital number, since it uses as much as digits as its factorization.

1097189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 1097189 is about 1047.4678992695. The cubic root of 1097189 is about 103.1400050404.

The spelling of 1097189 in words is "one million, ninety-seven thousand, one hundred eighty-nine".