9820440613 has 2 divisors, whose sum is σ = 9820440614. Its totient is φ = 9820440612.

The previous prime is 9820440601. The next prime is 9820440629. The reversal of 9820440613 is 3160440289.

9820440613 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8734210849 + 1086229764 = 93457^2 + 32958^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9820440613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9820440653) 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, 4910220306 + 4910220307.

It is an arithmetic number, because the mean of its divisors is an integer number (4910220307).

Almost surely, 2^9820440613 is an apocalyptic number.

It is an amenable number.

9820440613 is a deficient number, since it is larger than the sum of its proper divisors (1).

9820440613 is an equidigital number, since it uses as much as digits as its factorization.

9820440613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 9820440613 is about 99098.1362740995. The cubic root of 9820440613 is about 2141.4617646304.

The spelling of 9820440613 in words is "nine billion, eight hundred twenty million, four hundred forty thousand, six hundred thirteen".