985872813 has 16 divisors (see below), whose sum is σ = 1322880000. Its totient is φ = 653068080.

The previous prime is 985872793. The next prime is 985872827. The reversal of 985872813 is 318278589.

It is not a de Polignac number, because 985872813 - 2⁵ = 985872781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985872863) 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 in 15 ways as a sum of consecutive naturals, for example, 656938 + ... + 658436.

It is an arithmetic number, because the mean of its divisors is an integer number (82680000).

Almost surely, 2^985872813 is an apocalyptic number.

It is an amenable number.

985872813 is a deficient number, since it is larger than the sum of its proper divisors (337007187).

985872813 is a wasteful number, since it uses less digits than its factorization.

985872813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752.

The product of its digits is 967680, while the sum is 51.

The square root of 985872813 is about 31398.6116412812. The cubic root of 985872813 is about 995.2685867011.

The spelling of 985872813 in words is "nine hundred eighty-five million, eight hundred seventy-two thousand, eight hundred thirteen".