985644912193 has 2 divisors, whose sum is σ = 985644912194. Its totient is φ = 985644912192.

The previous prime is 985644912173. The next prime is 985644912199. The reversal of 985644912193 is 391219446589.

985644912193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 955873825344 + 29771086849 = 977688^2 + 172543^2 .

It is an emirp because it is prime and its reverse (391219446589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 985644912193 - 2²¹ = 985642815041 is a prime.

It is not a weakly prime, because it can be changed into another prime (985644912199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492822456096 + 492822456097.

It is an arithmetic number, because the mean of its divisors is an integer number (492822456097).

Almost surely, 2^985644912193 is an apocalyptic number.

It is an amenable number.

985644912193 is a deficient number, since it is larger than the sum of its proper divisors (1).

985644912193 is an equidigital number, since it uses as much as digits as its factorization.

985644912193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16796160, while the sum is 61.

The spelling of 985644912193 in words is "nine hundred eighty-five billion, six hundred forty-four million, nine hundred twelve thousand, one hundred ninety-three".