4878935647 has 2 divisors, whose sum is σ = 4878935648. Its totient is φ = 4878935646.

The previous prime is 4878935623. The next prime is 4878935657. The reversal of 4878935647 is 7465398784.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4878935647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4878935657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2439467823 + 2439467824.

It is an arithmetic number, because the mean of its divisors is an integer number (2439467824).

Almost surely, 2^4878935647 is an apocalyptic number.

4878935647 is a deficient number, since it is larger than the sum of its proper divisors (1).

4878935647 is an equidigital number, since it uses as much as digits as its factorization.

4878935647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 61.

The square root of 4878935647 is about 69849.3782864243. The cubic root of 4878935647 is about 1696.0618931695.

The spelling of 4878935647 in words is "four billion, eight hundred seventy-eight million, nine hundred thirty-five thousand, six hundred forty-seven".