1163423549 has 2 divisors, whose sum is σ = 1163423550. Its totient is φ = 1163423548.

The previous prime is 1163423483. The next prime is 1163423551. The reversal of 1163423549 is 9453243611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 801739225 + 361684324 = 28315^2 + 19018^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163423549 - 2²⁰ = 1162374973 is a prime.

It is a Sophie Germain prime.

Together with 1163423551, it forms a pair of twin primes.

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 (1163423249) 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, 581711774 + 581711775.

It is an arithmetic number, because the mean of its divisors is an integer number (581711775).

Almost surely, 2^1163423549 is an apocalyptic number.

It is an amenable number.

1163423549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163423549 is an equidigital number, since it uses as much as digits as its factorization.

1163423549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 38.

The square root of 1163423549 is about 34108.9951332489. The cubic root of 1163423549 is about 1051.7502325622.

The spelling of 1163423549 in words is "one billion, one hundred sixty-three million, four hundred twenty-three thousand, five hundred forty-nine".