1061105189 has 2 divisors, whose sum is σ = 1061105190. Its totient is φ = 1061105188.

The previous prime is 1061105131. The next prime is 1061105239. The reversal of 1061105189 is 9815011601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 731973025 + 329132164 = 27055^2 + 18142^2 .

It is an emirp because it is prime and its reverse (9815011601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1061105189 - 2¹⁶ = 1061039653 is a prime.

It is a super-2 number, since 2×1061105189² = 2251888444245451442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061105489) 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, 530552594 + 530552595.

It is an arithmetic number, because the mean of its divisors is an integer number (530552595).

Almost surely, 2^1061105189 is an apocalyptic number.

It is an amenable number.

1061105189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061105189 is an equidigital number, since it uses as much as digits as its factorization.

1061105189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 32.

The square root of 1061105189 is about 32574.6095755575. The cubic root of 1061105189 is about 1019.9670593617.

The spelling of 1061105189 in words is "one billion, sixty-one million, one hundred five thousand, one hundred eighty-nine".