1131112189 has 2 divisors, whose sum is σ = 1131112190. Its totient is φ = 1131112188.

The previous prime is 1131112181. The next prime is 1131112261. The reversal of 1131112189 is 9812111311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1070925625 + 60186564 = 32725^2 + 7758^2 .

It is an emirp because it is prime and its reverse (9812111311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131112189 - 2³ = 1131112181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131112181) 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, 565556094 + 565556095.

It is an arithmetic number, because the mean of its divisors is an integer number (565556095).

Almost surely, 2^1131112189 is an apocalyptic number.

It is an amenable number.

1131112189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131112189 is an equidigital number, since it uses as much as digits as its factorization.

1131112189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 28.

The square root of 1131112189 is about 33632.0113730951. The cubic root of 1131112189 is about 1041.9220462901.

The spelling of 1131112189 in words is "one billion, one hundred thirty-one million, one hundred twelve thousand, one hundred eighty-nine".