6478614449 has 2 divisors, whose sum is σ = 6478614450. Its totient is φ = 6478614448.

The previous prime is 6478614431. The next prime is 6478614481. The reversal of 6478614449 is 9444168746.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6473007025 + 5607424 = 80455^2 + 2368^2 .

It is a cyclic number.

It is not a de Polignac number, because 6478614449 - 2²⁰ = 6477565873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6478614449.

It is not a weakly prime, because it can be changed into another prime (6478614409) 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, 3239307224 + 3239307225.

It is an arithmetic number, because the mean of its divisors is an integer number (3239307225).

Almost surely, 2^6478614449 is an apocalyptic number.

It is an amenable number.

6478614449 is a deficient number, since it is larger than the sum of its proper divisors (1).

6478614449 is an equidigital number, since it uses as much as digits as its factorization.

6478614449 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 6478614449 is about 80489.8406570668. The cubic root of 6478614449 is about 1864.2066166591.

The spelling of 6478614449 in words is "six billion, four hundred seventy-eight million, six hundred fourteen thousand, four hundred forty-nine".