985933890613 has 4 divisors (see below), whose sum is σ = 1126781589280. Its totient is φ = 845086191948.

The previous prime is 985933890533. The next prime is 985933890629. The reversal of 985933890613 is 316098339589.

985933890613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 985933890613 - 2⁹ = 985933890101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985933890013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70423849323 + ... + 70423849336.

It is an arithmetic number, because the mean of its divisors is an integer number (281695397320).

Almost surely, 2^985933890613 is an apocalyptic number.

It is an amenable number.

985933890613 is a deficient number, since it is larger than the sum of its proper divisors (140847698667).

985933890613 is a wasteful number, since it uses less digits than its factorization.

985933890613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140847698666.

The product of its (nonzero) digits is 37791360, while the sum is 64.

The spelling of 985933890613 in words is "nine hundred eighty-five billion, nine hundred thirty-three million, eight hundred ninety thousand, six hundred thirteen".