2009188 has 12 divisors (see below), whose sum is σ = 3669120. Its totient is φ = 960872.

The previous prime is 2009173. The next prime is 2009191. The reversal of 2009188 is 8819002.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10828 + ... + 11011.

It is an arithmetic number, because the mean of its divisors is an integer number (305760).

2^2009188 is an apocalyptic number.

It is an amenable number.

2009188 is a deficient number, since it is larger than the sum of its proper divisors (1659932).

2009188 is a wasteful number, since it uses less digits than its factorization.

2009188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21866 (or 21864 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 2009188 is about 1417.4582886279. The cubic root of 2009188 is about 126.1847462022.

It can be divided in two parts, 2009 and 188, that added together give a cube (2197 = 13³).

The spelling of 2009188 in words is "two million, nine thousand, one hundred eighty-eight".