4878561329 has 2 divisors, whose sum is σ = 4878561330. Its totient is φ = 4878561328.

The previous prime is 4878561307. The next prime is 4878561361. The reversal of 4878561329 is 9231658784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4616930704 + 261630625 = 67948^2 + 16175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4878561329 is a prime.

It is not a weakly prime, because it can be changed into another prime (4878561229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2439280664 + 2439280665.

It is an arithmetic number, because the mean of its divisors is an integer number (2439280665).

Almost surely, 2^4878561329 is an apocalyptic number.

It is an amenable number.

4878561329 is a deficient number, since it is larger than the sum of its proper divisors (1).

4878561329 is an equidigital number, since it uses as much as digits as its factorization.

4878561329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 53.

The square root of 4878561329 is about 69846.6987695195. The cubic root of 4878561329 is about 1696.0185174021.

The spelling of 4878561329 in words is "four billion, eight hundred seventy-eight million, five hundred sixty-one thousand, three hundred twenty-nine".