885243861 has 12 divisors (see below), whose sum is σ = 1278943692. Its totient is φ = 590043456.

The previous prime is 885243859. The next prime is 885243893. The reversal of 885243861 is 168342588.

It can be written as a sum of positive squares in 2 ways, for example, as 204347025 + 680896836 = 14295^2 + 26094^2 .

It is not a de Polignac number, because 885243861 - 2¹ = 885243859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (885243841) 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 11 ways as a sum of consecutive naturals, for example, 80295 + ... + 90651.

It is an arithmetic number, because the mean of its divisors is an integer number (106578641).

Almost surely, 2^885243861 is an apocalyptic number.

It is an amenable number.

885243861 is a deficient number, since it is larger than the sum of its proper divisors (393699831).

885243861 is a wasteful number, since it uses less digits than its factorization.

885243861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19860 (or 19857 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 885243861 is about 29753.0479279014. The cubic root of 885243861 is about 960.1836530150.

The spelling of 885243861 in words is "eight hundred eighty-five million, two hundred forty-three thousand, eight hundred sixty-one".