985747000813 has 2 divisors, whose sum is σ = 985747000814. Its totient is φ = 985747000812.

The previous prime is 985747000753. The next prime is 985747000831. The reversal of 985747000813 is 318000747589.

Together with next prime (985747000831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 781715917609 + 204031083204 = 884147^2 + 451698^2 .

It is a cyclic number.

It is not a de Polignac number, because 985747000813 - 2¹⁷ = 985746869741 is a prime.

It is a super-2 number, since 2×985747000813² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985747000213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492873500406 + 492873500407.

It is an arithmetic number, because the mean of its divisors is an integer number (492873500407).

Almost surely, 2^985747000813 is an apocalyptic number.

It is an amenable number.

985747000813 is a deficient number, since it is larger than the sum of its proper divisors (1).

985747000813 is an equidigital number, since it uses as much as digits as its factorization.

985747000813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 985747000813 in words is "nine hundred eighty-five billion, seven hundred forty-seven million, eight hundred thirteen", and thus it is an aban number.