638057529413 has 2 divisors, whose sum is σ = 638057529414. Its totient is φ = 638057529412.

The previous prime is 638057529401. The next prime is 638057529469. The reversal of 638057529413 is 314925750836.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516812896609 + 121244632804 = 718897^2 + 348202^2 .

It is a cyclic number.

It is not a de Polignac number, because 638057529413 - 2⁴ = 638057529397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (638057523413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319028764706 + 319028764707.

It is an arithmetic number, because the mean of its divisors is an integer number (319028764707).

It is a 1-persistent number, because it is pandigital, but 2⋅638057529413 = 1276115058826 is not.

Almost surely, 2^638057529413 is an apocalyptic number.

It is an amenable number.

638057529413 is a deficient number, since it is larger than the sum of its proper divisors (1).

638057529413 is an equidigital number, since it uses as much as digits as its factorization.

638057529413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 638057529413 in words is "six hundred thirty-eight billion, fifty-seven million, five hundred twenty-nine thousand, four hundred thirteen".