2101885 has 8 divisors (see below), whose sum is σ = 2538720. Its totient is φ = 1670544.

The previous prime is 2101873. The next prime is 2101903. The reversal of 2101885 is 5881012.

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

It is a cyclic number.

It is not a de Polignac number, because 2101885 - 2¹¹ = 2099837 is a prime.

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, 475 + ... + 2104.

It is an arithmetic number, because the mean of its divisors is an integer number (317340).

2^2101885 is an apocalyptic number.

It is an amenable number.

2101885 is a deficient number, since it is larger than the sum of its proper divisors (436835).

2101885 is a wasteful number, since it uses less digits than its factorization.

2101885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 2101885 is about 1449.7879155242. The cubic root of 2101885 is about 128.0962207818.

Adding to 2101885 its reverse (5881012), we get a palindrome (7982897).

The spelling of 2101885 in words is "two million, one hundred one thousand, eight hundred eighty-five".