2085381660 has 48 divisors (see below), whose sum is σ = 5899281696. Its totient is φ = 550367232.

The previous prime is 2085381637. The next prime is 2085381673. The reversal of 2085381660 is 661835802.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173337 + ... + 184976.

It is an arithmetic number, because the mean of its divisors is an integer number (122901702).

Almost surely, 2^2085381660 is an apocalyptic number.

2085381660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2085381660 is an abundant number, since it is smaller than the sum of its proper divisors (3813900036).

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

2085381660 is a wasteful number, since it uses less digits than its factorization.

2085381660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358422 (or 358420 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 2085381660 is about 45665.9792405681. The cubic root of 2085381660 is about 1277.6008240960.

The spelling of 2085381660 in words is "two billion, eighty-five million, three hundred eighty-one thousand, six hundred sixty".