2195519549 has 2 divisors, whose sum is σ = 2195519550. Its totient is φ = 2195519548.

The previous prime is 2195519527. The next prime is 2195519561. The reversal of 2195519549 is 9459155912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2186217049 + 9302500 = 46757^2 + 3050^2 .

It is a cyclic number.

It is not a de Polignac number, because 2195519549 - 2¹⁶ = 2195454013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2195519497 and 2195519506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2195519509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097759774 + 1097759775.

It is an arithmetic number, because the mean of its divisors is an integer number (1097759775).

Almost surely, 2^2195519549 is an apocalyptic number.

It is an amenable number.

2195519549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2195519549 is an equidigital number, since it uses as much as digits as its factorization.

2195519549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 729000, while the sum is 50.

The square root of 2195519549 is about 46856.3714877710. The cubic root of 2195519549 is about 1299.7079322171.

The spelling of 2195519549 in words is "two billion, one hundred ninety-five million, five hundred nineteen thousand, five hundred forty-nine".