1118563 has 2 divisors, whose sum is σ = 1118564. Its totient is φ = 1118562.

The previous prime is 1118527. The next prime is 1118567. The reversal of 1118563 is 3658111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1118563 - 2¹⁷ = 987491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1118567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559281 + 559282.

It is an arithmetic number, because the mean of its divisors is an integer number (559282).

2^1118563 is an apocalyptic number.

1118563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118563 is an equidigital number, since it uses as much as digits as its factorization.

1118563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 25.

The square root of 1118563 is about 1057.6213878321. The cubic root of 1118563 is about 103.8054486592.

It can be divided in two parts, 1118 and 563, that added together give a square (1681 = 41²).

The spelling of 1118563 in words is "one million, one hundred eighteen thousand, five hundred sixty-three".