2001866885 has 8 divisors (see below), whose sum is σ = 2528674080. Its totient is φ = 1517204304.

The previous prime is 2001866863. The next prime is 2001866887. The reversal of 2001866885 is 5886681002.

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 2001866885 - 2²⁸ = 1733431429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001866887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10536047 + ... + 10536236.

It is an arithmetic number, because the mean of its divisors is an integer number (316084260).

Almost surely, 2^2001866885 is an apocalyptic number.

It is an amenable number.

2001866885 is a deficient number, since it is larger than the sum of its proper divisors (526807195).

2001866885 is a wasteful number, since it uses less digits than its factorization.

2001866885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21072307.

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 2001866885 is about 44742.2270903003. The cubic root of 2001866885 is about 1260.3129492665.

The spelling of 2001866885 in words is "two billion, one million, eight hundred sixty-six thousand, eight hundred eighty-five".