6432278849 has 2 divisors, whose sum is σ = 6432278850.
Its totient is φ = 6432278848.
The previous prime is 6432278789. The next prime is 6432278861. The reversal of 6432278849 is 9488722346.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 3505468849 + 2926810000 = 59207^2 + 54100^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-6432278849 is a prime.
It is a super-2 number, since 2×64322788492 = 82748422382585529602, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 6432278849.
It is not a weakly prime, because it can be changed into another prime (6432238849) 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, 3216139424 + 3216139425.
It is an arithmetic number, because the mean of its divisors is an integer number (3216139425).
Almost surely, 26432278849 is an apocalyptic number.
It is an amenable number.
6432278849 is a deficient number, since it is larger than the sum of its proper divisors (1).
6432278849 is an equidigital number, since it uses as much as digits as its factorization.
6432278849 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 4644864, while the sum is 53.
The square root of 6432278849 is about 80201.4890697174.
The cubic root of 6432278849 is about 1859.7516576940.
The spelling of 6432278849 in words is "six billion, four hundred thirty-two million, two hundred seventy-eight thousand, eight hundred forty-nine".