485640013 has 2 divisors, whose sum is σ = 485640014. Its totient is φ = 485640012.

The previous prime is 485639993. The next prime is 485640041. The reversal of 485640013 is 310046584.

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., 245172964 + 240467049 = 15658^2 + 15507^2 .

It is a cyclic number.

It is not a de Polignac number, because 485640013 - 2⁹ = 485639501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (485640073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242820006 + 242820007.

It is an arithmetic number, because the mean of its divisors is an integer number (242820007).

Almost surely, 2^485640013 is an apocalyptic number.

It is an amenable number.

485640013 is a deficient number, since it is larger than the sum of its proper divisors (1).

485640013 is an equidigital number, since it uses as much as digits as its factorization.

485640013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 485640013 is about 22037.2415016036. The cubic root of 485640013 is about 786.0282483314.

Adding to 485640013 its reverse (310046584), we get a palindrome (795686597).

The spelling of 485640013 in words is "four hundred eighty-five million, six hundred forty thousand, thirteen".