6549789289 has 2 divisors, whose sum is σ = 6549789290. Its totient is φ = 6549789288.

The previous prime is 6549789203. The next prime is 6549789313. The reversal of 6549789289 is 9829879456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6220003689 + 329785600 = 78867^2 + 18160^2 .

It is a cyclic number.

It is not a de Polignac number, because 6549789289 - 2¹⁹ = 6549265001 is a prime.

It is not a weakly prime, because it can be changed into another prime (6549789989) 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, 3274894644 + 3274894645.

It is an arithmetic number, because the mean of its divisors is an integer number (3274894645).

Almost surely, 2^6549789289 is an apocalyptic number.

It is an amenable number.

6549789289 is a deficient number, since it is larger than the sum of its proper divisors (1).

6549789289 is an equidigital number, since it uses as much as digits as its factorization.

6549789289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78382080, while the sum is 67.

The square root of 6549789289 is about 80930.7684938182. The cubic root of 6549789289 is about 1871.0085677250.

The spelling of 6549789289 in words is "six billion, five hundred forty-nine million, seven hundred eighty-nine thousand, two hundred eighty-nine".