2661130189 has 2 divisors, whose sum is σ = 2661130190. Its totient is φ = 2661130188.

The previous prime is 2661130141. The next prime is 2661130217. The reversal of 2661130189 is 9810311662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2654001289 + 7128900 = 51517^2 + 2670^2 .

It is a cyclic number.

It is not a de Polignac number, because 2661130189 - 2³¹ = 513646541 is a prime.

It is a super-2 number, since 2×2661130189² = 14163227765614351442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2661130289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330565094 + 1330565095.

It is an arithmetic number, because the mean of its divisors is an integer number (1330565095).

Almost surely, 2^2661130189 is an apocalyptic number.

It is an amenable number.

2661130189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661130189 is an equidigital number, since it uses as much as digits as its factorization.

2661130189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 2661130189 is about 51586.1433817261. The cubic root of 2661130189 is about 1385.7621889654.

The spelling of 2661130189 in words is "two billion, six hundred sixty-one million, one hundred thirty thousand, one hundred eighty-nine".