4639638593 has 2 divisors, whose sum is σ = 4639638594. Its totient is φ = 4639638592.

The previous prime is 4639638527. The next prime is 4639638599. The reversal of 4639638593 is 3958369364.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2887127824 + 1752510769 = 53732^2 + 41863^2 .

It is a cyclic number.

It is not a de Polignac number, because 4639638593 - 2⁸ = 4639638337 is a prime.

It is not a weakly prime, because it can be changed into another prime (4639638599) 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, 2319819296 + 2319819297.

It is an arithmetic number, because the mean of its divisors is an integer number (2319819297).

Almost surely, 2^4639638593 is an apocalyptic number.

It is an amenable number.

4639638593 is a deficient number, since it is larger than the sum of its proper divisors (1).

4639638593 is an equidigital number, since it uses as much as digits as its factorization.

4639638593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12597120, while the sum is 56.

The square root of 4639638593 is about 68114.8925933235. The cubic root of 4639638593 is about 1667.8668777596.

The spelling of 4639638593 in words is "four billion, six hundred thirty-nine million, six hundred thirty-eight thousand, five hundred ninety-three".