1166220563 has 2 divisors, whose sum is σ = 1166220564. Its totient is φ = 1166220562.

The previous prime is 1166220481. The next prime is 1166220569. The reversal of 1166220563 is 3650226611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1166220563 - 2¹⁶ = 1166155027 is a prime.

It is not a weakly prime, because it can be changed into another prime (1166220569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583110281 + 583110282.

It is an arithmetic number, because the mean of its divisors is an integer number (583110282).

Almost surely, 2^1166220563 is an apocalyptic number.

1166220563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166220563 is an equidigital number, since it uses as much as digits as its factorization.

1166220563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1166220563 is about 34149.9716398125. The cubic root of 1166220563 is about 1052.5924038761.

The spelling of 1166220563 in words is "one billion, one hundred sixty-six million, two hundred twenty thousand, five hundred sixty-three".