1118297563 has 2 divisors, whose sum is σ = 1118297564. Its totient is φ = 1118297562.

The previous prime is 1118297561. The next prime is 1118297581. The reversal of 1118297563 is 3657928111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1118297563 - 2¹ = 1118297561 is a prime.

Together with 1118297561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1118297561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559148781 + 559148782.

It is an arithmetic number, because the mean of its divisors is an integer number (559148782).

Almost surely, 2^1118297563 is an apocalyptic number.

1118297563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118297563 is an equidigital number, since it uses as much as digits as its factorization.

1118297563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 43.

The square root of 1118297563 is about 33440.9563708935. The cubic root of 1118297563 is about 1037.9723693676.

The spelling of 1118297563 in words is "one billion, one hundred eighteen million, two hundred ninety-seven thousand, five hundred sixty-three".