985832537881 has 3 divisors (see below), whose sum is σ = 985833530773. Its totient is φ = 985831544990.

The previous prime is 985832537857. The next prime is 985832537887. The reversal of 985832537881 is 188735238589.

The square root of 985832537881 is 992891.

It is a perfect power (a square), and thus also a powerful number.

985832537881 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 brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 188735238589 = 136417 ⋅1383517.

It is not a de Polignac number, because 985832537881 - 2³⁵ = 951472799513 is a prime.

It is a super-2 number, since 2×985832537881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985832537887) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 496446 + ... + 1489336.

Almost surely, 2^985832537881 is an apocalyptic number.

985832537881 is the 992891-st square number.

985832537881 is the 496446-th centered octagonal number.

It is an amenable number.

985832537881 is a deficient number, since it is larger than the sum of its proper divisors (992892).

985832537881 is an frugal number, since it uses more digits than its factorization.

985832537881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985782 (or 992891 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 67.

The spelling of 985832537881 in words is "nine hundred eighty-five billion, eight hundred thirty-two million, five hundred thirty-seven thousand, eight hundred eighty-one".