985161589 has 4 divisors (see below), whose sum is σ = 988138240. Its totient is φ = 982184940.

The previous prime is 985161587. The next prime is 985161623.

985161589 is nontrivially palindromic in base 10.

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 985161589 - 2¹ = 985161587 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 (985161587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1487829 + ... + 1488490.

It is an arithmetic number, because the mean of its divisors is an integer number (247034560).

Almost surely, 2^985161589 is an apocalyptic number.

It is an amenable number.

985161589 is a deficient number, since it is larger than the sum of its proper divisors (2976651).

985161589 is a wasteful number, since it uses less digits than its factorization.

985161589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976650.

The product of its digits is 777600, while the sum is 52.

The square root of 985161589 is about 31387.2838742061. The cubic root of 985161589 is about 995.0291950391.

The spelling of 985161589 in words is "nine hundred eighty-five million, one hundred sixty-one thousand, five hundred eighty-nine".