1161226589 has 2 divisors, whose sum is σ = 1161226590. Its totient is φ = 1161226588.

The previous prime is 1161226571. The next prime is 1161226631. The reversal of 1161226589 is 9856221611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 798514564 + 362712025 = 28258^2 + 19045^2 .

It is an emirp because it is prime and its reverse (9856221611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1161226589 - 2²⁰ = 1160178013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161226519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580613294 + 580613295.

It is an arithmetic number, because the mean of its divisors is an integer number (580613295).

Almost surely, 2^1161226589 is an apocalyptic number.

It is an amenable number.

1161226589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161226589 is an equidigital number, since it uses as much as digits as its factorization.

1161226589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 41.

The square root of 1161226589 is about 34076.7749207580. The cubic root of 1161226589 is about 1051.0877884714.

The spelling of 1161226589 in words is "one billion, one hundred sixty-one million, two hundred twenty-six thousand, five hundred eighty-nine".