1310189 has 2 divisors, whose sum is σ = 1310190. Its totient is φ = 1310188.

The previous prime is 1310171. The next prime is 1310209. The reversal of 1310189 is 9810131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1247689 + 62500 = 1117^2 + 250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310189 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655094 + 655095.

It is an arithmetic number, because the mean of its divisors is an integer number (655095).

2^1310189 is an apocalyptic number.

It is an amenable number.

1310189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310189 is an equidigital number, since it uses as much as digits as its factorization.

1310189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1310189 is about 1144.6348762815. The cubic root of 1310189 is about 109.4236799904.

The spelling of 1310189 in words is "one million, three hundred ten thousand, one hundred eighty-nine".