2009180 has 12 divisors (see below), whose sum is σ = 4219320. Its totient is φ = 803664.

The previous prime is 2009173. The next prime is 2009191. The reversal of 2009180 is 819002.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 100459 = 2009180 / (2 + 0 + 0 + 9 + 1 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50210 + ... + 50249.

It is an arithmetic number, because the mean of its divisors is an integer number (351610).

2^2009180 is an apocalyptic number.

2009180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2009180 is an abundant number, since it is smaller than the sum of its proper divisors (2210140).

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

2009180 is a wasteful number, since it uses less digits than its factorization.

2009180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100468 (or 100466 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2009180 is about 1417.4554666726. The cubic root of 2009180 is about 126.1845787250.

The spelling of 2009180 in words is "two million, nine thousand, one hundred eighty".