1185089 has 2 divisors, whose sum is σ = 1185090. Its totient is φ = 1185088.

The previous prime is 1185077. The next prime is 1185103. The reversal of 1185089 is 9805811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 935089 + 250000 = 967^2 + 500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1185089 is a prime.

It is a Chen prime.

It is equal to p₉₁₈₆₈ and since 1185089 and 91868 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1185389) 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, 592544 + 592545.

It is an arithmetic number, because the mean of its divisors is an integer number (592545).

2^1185089 is an apocalyptic number.

It is an amenable number.

1185089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1185089 is an equidigital number, since it uses as much as digits as its factorization.

1185089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 1185089 is about 1088.6179311402. The cubic root of 1185089 is about 105.8238738867.

The spelling of 1185089 in words is "one million, one hundred eighty-five thousand, eighty-nine".