5115844609 has 2 divisors, whose sum is σ = 5115844610. Its totient is φ = 5115844608.

The previous prime is 5115844597. The next prime is 5115844681. The reversal of 5115844609 is 9064485115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4289857009 + 825987600 = 65497^2 + 28740^2 .

It is a cyclic number.

It is not a de Polignac number, because 5115844609 - 2²³ = 5107456001 is a prime.

It is not a weakly prime, because it can be changed into another prime (5115841609) 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, 2557922304 + 2557922305.

It is an arithmetic number, because the mean of its divisors is an integer number (2557922305).

Almost surely, 2^5115844609 is an apocalyptic number.

It is an amenable number.

5115844609 is a deficient number, since it is larger than the sum of its proper divisors (1).

5115844609 is an equidigital number, since it uses as much as digits as its factorization.

5115844609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 5115844609 is about 71525.1327087199. The cubic root of 5115844609 is about 1723.0813488189.

The spelling of 5115844609 in words is "five billion, one hundred fifteen million, eight hundred forty-four thousand, six hundred nine".