2839112561 has 2 divisors, whose sum is σ = 2839112562. Its totient is φ = 2839112560.

The previous prime is 2839112531. The next prime is 2839112567. The reversal of 2839112561 is 1652119382.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2206086961 + 633025600 = 46969^2 + 25160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2839112561 - 2¹⁴ = 2839096177 is a prime.

It is not a weakly prime, because it can be changed into another prime (2839112567) 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, 1419556280 + 1419556281.

It is an arithmetic number, because the mean of its divisors is an integer number (1419556281).

Almost surely, 2^2839112561 is an apocalyptic number.

It is an amenable number.

2839112561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2839112561 is an equidigital number, since it uses as much as digits as its factorization.

2839112561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 2839112561 is about 53283.3234793026. The cubic root of 2839112561 is about 1415.9922304321.

The spelling of 2839112561 in words is "two billion, eight hundred thirty-nine million, one hundred twelve thousand, five hundred sixty-one".