985881865 has 8 divisors (see below), whose sum is σ = 1190317248. Its totient is φ = 783866160.

The previous prime is 985881857. The next prime is 985881877. The reversal of 985881865 is 568188589.

985881865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 985881865 - 2³ = 985881857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604021 + ... + 605650.

It is an arithmetic number, because the mean of its divisors is an integer number (148789656).

Almost surely, 2^985881865 is an apocalyptic number.

It is an amenable number.

985881865 is a deficient number, since it is larger than the sum of its proper divisors (204435383).

985881865 is a wasteful number, since it uses less digits than its factorization.

985881865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209839.

The product of its digits is 5529600, while the sum is 58.

The square root of 985881865 is about 31398.7557874512. The cubic root of 985881865 is about 995.2716327815.

The spelling of 985881865 in words is "nine hundred eighty-five million, eight hundred eighty-one thousand, eight hundred sixty-five".