2085989880 has 64 divisors (see below), whose sum is σ = 6739356960. Its totient is φ = 513474048.

The previous prime is 2085989833. The next prime is 2085989911. The reversal of 2085989880 is 889895802.

It is a self number, because there is not a number n which added to its sum of digits gives 2085989880.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 667027 + ... + 670146.

Almost surely, 2^2085989880 is an apocalyptic number.

2085989880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2085989880 is an abundant number, since it is smaller than the sum of its proper divisors (4653367080).

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

2085989880 is a wasteful number, since it uses less digits than its factorization.

2085989880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337200 (or 1337196 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 57.

The square root of 2085989880 is about 45672.6381983787. The cubic root of 2085989880 is about 1277.7250198815.

The spelling of 2085989880 in words is "two billion, eighty-five million, nine hundred eighty-nine thousand, eight hundred eighty".