1800660060 has 144 divisors (see below), whose sum is σ = 5803158816. Its totient is φ = 450379776.

The previous prime is 1800660047. The next prime is 1800660061. The reversal of 1800660060 is 600660081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800660061) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1079347 + ... + 1081013.

It is an arithmetic number, because the mean of its divisors is an integer number (40299714).

Almost surely, 2^1800660060 is an apocalyptic number.

1800660060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1800660060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2901579408).

1800660060 is an abundant number, since it is smaller than the sum of its proper divisors (4002498756).

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

1800660060 is a wasteful number, since it uses less digits than its factorization.

1800660060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052 (or 2047 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1800660060 is about 42434.1850398944. The cubic root of 1800660060 is about 1216.5890705083.

The spelling of 1800660060 in words is "one billion, eight hundred million, six hundred sixty thousand, sixty".