2085981912 has 48 divisors (see below), whose sum is σ = 6456612240. Its totient is φ = 595994688.

The previous prime is 2085981907. The next prime is 2085981929. The reversal of 2085981912 is 2191895802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2068923 + ... + 2069930.

It is an arithmetic number, because the mean of its divisors is an integer number (134512755).

Almost surely, 2^2085981912 is an apocalyptic number.

It is an amenable number.

2085981912 is an abundant number, since it is smaller than the sum of its proper divisors (4370630328).

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

2085981912 is a wasteful number, since it uses less digits than its factorization.

2085981912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4138872 (or 4138865 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 2085981912 is about 45672.5509688259. The cubic root of 2085981912 is about 1277.7233930079.

The spelling of 2085981912 in words is "two billion, eighty-five million, nine hundred eighty-one thousand, nine hundred twelve".