889868681844 has 24 divisors (see below), whose sum is σ = 2124647706720. Its totient is φ = 289724686944.

The previous prime is 889868681813. The next prime is 889868681873. The reversal of 889868681844 is 448186868988.

It is a self number, because there is not a number n which added to its sum of digits gives 889868681844.

It is a congruent 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, 862275339 + ... + 862276370.

It is an arithmetic number, because the mean of its divisors is an integer number (88526987780).

Almost surely, 2^889868681844 is an apocalyptic number.

It is an amenable number.

889868681844 is an abundant number, since it is smaller than the sum of its proper divisors (1234779024876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

889868681844 is a wasteful number, since it uses less digits than its factorization.

889868681844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724551759 (or 1724551757 counting only the distinct ones).

The product of its digits is 1358954496, while the sum is 78.

The spelling of 889868681844 in words is "eight hundred eighty-nine billion, eight hundred sixty-eight million, six hundred eighty-one thousand, eight hundred forty-four".