1118911 has 2 divisors, whose sum is σ = 1118912. Its totient is φ = 1118910.

The previous prime is 1118893. The next prime is 1118921. The reversal of 1118911 is 1198111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1118911 - 2⁷ = 1118783 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1118921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559455 + 559456.

It is an arithmetic number, because the mean of its divisors is an integer number (559456).

2^1118911 is an apocalyptic number.

1118911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118911 is an equidigital number, since it uses as much as digits as its factorization.

1118911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 22.

The square root of 1118911 is about 1057.7858951603. The cubic root of 1118911 is about 103.8162126336.

It can be divided in two parts, 111 and 8911, that multiplied together give a triangular number (989121 = T₁₄₀₆).

The spelling of 1118911 in words is "one million, one hundred eighteen thousand, nine hundred eleven".