1163345563 has 4 divisors (see below), whose sum is σ = 1164912048. Its totient is φ = 1161779080.

The previous prime is 1163345549. The next prime is 1163345569. The reversal of 1163345563 is 3655433611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1163345563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1163345569) 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, 782128 + ... + 783613.

It is an arithmetic number, because the mean of its divisors is an integer number (291228012).

Almost surely, 2^1163345563 is an apocalyptic number.

1163345563 is a deficient number, since it is larger than the sum of its proper divisors (1566485).

1163345563 is an equidigital number, since it uses as much as digits as its factorization.

1163345563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566484.

The product of its digits is 97200, while the sum is 37.

The square root of 1163345563 is about 34107.8519259129. The cubic root of 1163345563 is about 1051.7267319129.

The spelling of 1163345563 in words is "one billion, one hundred sixty-three million, three hundred forty-five thousand, five hundred sixty-three".