1111111843 has 2 divisors, whose sum is σ = 1111111844. Its totient is φ = 1111111842.

The previous prime is 1111111741. The next prime is 1111111847. The reversal of 1111111843 is 3481111111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1111111843 - 2¹⁷ = 1110980771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111111847) 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, 555555921 + 555555922.

It is an arithmetic number, because the mean of its divisors is an integer number (555555922).

Almost surely, 2^1111111843 is an apocalyptic number.

1111111843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111111843 is an equidigital number, since it uses as much as digits as its factorization.

1111111843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 22.

The square root of 1111111843 is about 33333.3443116649. The cubic root of 1111111843 is about 1035.7443960661.

Adding to 1111111843 its reverse (3481111111), we get a palindrome (4592222954).

The spelling of 1111111843 in words is "one billion, one hundred eleven million, one hundred eleven thousand, eight hundred forty-three".