1163340509 has 2 divisors, whose sum is σ = 1163340510. Its totient is φ = 1163340508.

The previous prime is 1163340473. The next prime is 1163340517. The reversal of 1163340509 is 9050433611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 785232484 + 378108025 = 28022^2 + 19445^2 .

It is an emirp because it is prime and its reverse (9050433611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1163340509 is a prime.

It is a super-2 number, since 2×1163340509² = 2706722279760758162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1163340809) 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, 581670254 + 581670255.

It is an arithmetic number, because the mean of its divisors is an integer number (581670255).

Almost surely, 2^1163340509 is an apocalyptic number.

It is an amenable number.

1163340509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163340509 is an equidigital number, since it uses as much as digits as its factorization.

1163340509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 1163340509 is about 34107.7778373203. Note that the first 3 decimals coincide. The cubic root of 1163340509 is about 1051.7252088817.

The spelling of 1163340509 in words is "one billion, one hundred sixty-three million, three hundred forty thousand, five hundred nine".