520822307849 has 2 divisors, whose sum is σ = 520822307850. Its totient is φ = 520822307848.

The previous prime is 520822307833. The next prime is 520822307891. The reversal of 520822307849 is 948703228025.

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., 515459382025 + 5362925824 = 717955^2 + 73232^2 .

It is a cyclic number.

It is not a de Polignac number, because 520822307849 - 2⁴ = 520822307833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520822307797 and 520822307806.

It is not a weakly prime, because it can be changed into another prime (520822307249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260411153924 + 260411153925.

It is an arithmetic number, because the mean of its divisors is an integer number (260411153925).

Almost surely, 2^520822307849 is an apocalyptic number.

It is an amenable number.

520822307849 is a deficient number, since it is larger than the sum of its proper divisors (1).

520822307849 is an equidigital number, since it uses as much as digits as its factorization.

520822307849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 520822307849 in words is "five hundred twenty billion, eight hundred twenty-two million, three hundred seven thousand, eight hundred forty-nine".