1800982660 has 24 divisors (see below), whose sum is σ = 3862535040. Its totient is φ = 705065184.

The previous prime is 1800982649. The next prime is 1800982681. The reversal of 1800982660 is 662890081.

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 7 ways as a sum of consecutive naturals, for example, 957030 + ... + 958909.

It is an arithmetic number, because the mean of its divisors is an integer number (160938960).

Almost surely, 2^1800982660 is an apocalyptic number.

1800982660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1800982660 is an abundant number, since it is smaller than the sum of its proper divisors (2061552380).

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

1800982660 is a wasteful number, since it uses less digits than its factorization.

1800982660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915995 (or 1915993 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 1800982660 is about 42437.9860502357. The cubic root of 1800982660 is about 1216.6617194603.

The spelling of 1800982660 in words is "one billion, eight hundred million, nine hundred eighty-two thousand, six hundred sixty".