2009166 has 8 divisors (see below), whose sum is σ = 4018344. Its totient is φ = 669720.

The previous prime is 2009113. The next prime is 2009167. The reversal of 2009166 is 6619002.

It is a sphenic number, since it is the product of 3 distinct primes.

2009166 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009167) by changing a digit.

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, 167425 + ... + 167436.

It is an arithmetic number, because the mean of its divisors is an integer number (502293).

2^2009166 is an apocalyptic number.

2009166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2009166 is a wasteful number, since it uses less digits than its factorization.

2009166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334866.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 2009166 is about 1417.4505282372. The cubic root of 2009166 is about 126.1842856389.

It can be divided in two parts, 20091 and 66, that multiplied together give a triangular number (1326006 = T₁₆₂₈).

The spelling of 2009166 in words is "two million, nine thousand, one hundred sixty-six".