1115189 has 2 divisors, whose sum is σ = 1115190.
Its totient is φ = 1115188.
The previous prime is 1115131. The next prime is 1115207. The reversal of 1115189 is 9815111.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 1060900 + 54289 = 1030^2 + 233^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1115189 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1115089) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557594 + 557595.
It is an arithmetic number, because the mean of its divisors is an integer number (557595).
21115189 is an apocalyptic number.
It is an amenable number.
1115189 is a deficient number, since it is larger than the sum of its proper divisors (1).
1115189 is an equidigital number, since it uses as much as digits as its factorization.
1115189 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 360, while the sum is 26.
The square root of 1115189 is about 1056.0250943988.
The cubic root of 1115189 is about 103.7009716574.
The spelling of 1115189 in words is "one million, one hundred fifteen thousand, one hundred eighty-nine".