2081985606 has 48 divisors (see below), whose sum is σ = 4828981248. Its totient is φ = 671603400.

The previous prime is 2081985559. The next prime is 2081985613. The reversal of 2081985606 is 6065891802.

2081985606 is a `hidden beast` number, since 2 + 0 + 81 + 9 + 8 + 560 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 54030 + ... + 84161.

It is an arithmetic number, because the mean of its divisors is an integer number (100603776).

Almost surely, 2^2081985606 is an apocalyptic number.

2081985606 is an abundant number, since it is smaller than the sum of its proper divisors (2746995642).

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

2081985606 is a wasteful number, since it uses less digits than its factorization.

2081985606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138239 (or 138227 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 2081985606 is about 45628.7804570756. The cubic root of 2081985606 is about 1276.9069209354.

The spelling of 2081985606 in words is "two billion, eighty-one million, nine hundred eighty-five thousand, six hundred six".