1163805113 has 4 divisors (see below), whose sum is σ = 1163875920. Its totient is φ = 1163734308.

The previous prime is 1163805089. The next prime is 1163805173. The reversal of 1163805113 is 3115083611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3115083611 = 19 ⋅163951769.

It is a cyclic number.

It is not a de Polignac number, because 1163805113 - 2²⁴ = 1147027897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1163805173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3506 + ... + 48372.

It is an arithmetic number, because the mean of its divisors is an integer number (290968980).

Almost surely, 2^1163805113 is an apocalyptic number.

It is an amenable number.

1163805113 is a deficient number, since it is larger than the sum of its proper divisors (70807).

1163805113 is an equidigital number, since it uses as much as digits as its factorization.

1163805113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70806.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1163805113 is about 34114.5879793381. The cubic root of 1163805113 is about 1051.8651996241.

Adding to 1163805113 its reverse (3115083611), we get a palindrome (4278888724).

The spelling of 1163805113 in words is "one billion, one hundred sixty-three million, eight hundred five thousand, one hundred thirteen".