1118844481 has 2 divisors, whose sum is σ = 1118844482. Its totient is φ = 1118844480.

The previous prime is 1118844403. The next prime is 1118844491. The reversal of 1118844481 is 1844488111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 755370256 + 363474225 = 27484^2 + 19065^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118844481 - 2⁹ = 1118843969 is a prime.

It is a super-2 number, since 2×1118844481² = 2503625945328318722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1118844491) 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, 559422240 + 559422241.

It is an arithmetic number, because the mean of its divisors is an integer number (559422241).

Almost surely, 2^1118844481 is an apocalyptic number.

It is an amenable number.

1118844481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118844481 is an equidigital number, since it uses as much as digits as its factorization.

1118844481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32768, while the sum is 40.

The square root of 1118844481 is about 33449.1327391309. The cubic root of 1118844481 is about 1038.1415530957.

The spelling of 1118844481 in words is "one billion, one hundred eighteen million, eight hundred forty-four thousand, four hundred eighty-one".