4878812161 has 2 divisors, whose sum is σ = 4878812162. Its totient is φ = 4878812160.

The previous prime is 4878812143. The next prime is 4878812173. The reversal of 4878812161 is 1612188784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2785200625 + 2093611536 = 52775^2 + 45756^2 .

It is a cyclic number.

It is not a de Polignac number, because 4878812161 - 2¹⁵ = 4878779393 is a prime.

It is not a weakly prime, because it can be changed into another prime (4878812101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2439406080 + 2439406081.

It is an arithmetic number, because the mean of its divisors is an integer number (2439406081).

Almost surely, 2^4878812161 is an apocalyptic number.

It is an amenable number.

4878812161 is a deficient number, since it is larger than the sum of its proper divisors (1).

4878812161 is an equidigital number, since it uses as much as digits as its factorization.

4878812161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172032, while the sum is 46.

The square root of 4878812161 is about 69848.4943359554. The cubic root of 4878812161 is about 1696.0475839238.

The spelling of 4878812161 in words is "four billion, eight hundred seventy-eight million, eight hundred twelve thousand, one hundred sixty-one".