985581373 has 4 divisors (see below), whose sum is σ = 1126378720. Its totient is φ = 844784028.

The previous prime is 985581361. The next prime is 985581427. The reversal of 985581373 is 373185589.

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 a de Polignac number, because none of the positive numbers 2^k-985581373 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 (985581313) 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, 70398663 + ... + 70398676.

It is an arithmetic number, because the mean of its divisors is an integer number (281594680).

Almost surely, 2^985581373 is an apocalyptic number.

It is an amenable number.

985581373 is a deficient number, since it is larger than the sum of its proper divisors (140797347).

985581373 is a wasteful number, since it uses less digits than its factorization.

985581373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140797346.

The product of its digits is 907200, while the sum is 49.

The square root of 985581373 is about 31393.9703287112. The cubic root of 985581373 is about 995.1705045212.

The spelling of 985581373 in words is "nine hundred eighty-five million, five hundred eighty-one thousand, three hundred seventy-three".