985320013 has 2 divisors, whose sum is σ = 985320014. Its totient is φ = 985320012.

The previous prime is 985319989. The next prime is 985320019. The reversal of 985320013 is 310023589.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 938013129 + 47306884 = 30627^2 + 6878^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985320013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985320019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492660006 + 492660007.

It is an arithmetic number, because the mean of its divisors is an integer number (492660007).

Almost surely, 2^985320013 is an apocalyptic number.

It is an amenable number.

985320013 is a deficient number, since it is larger than the sum of its proper divisors (1).

985320013 is an equidigital number, since it uses as much as digits as its factorization.

985320013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 985320013 is about 31389.8074699416. The cubic root of 985320013 is about 995.0825291174.

The spelling of 985320013 in words is "nine hundred eighty-five million, three hundred twenty thousand, thirteen".