2180164 has 12 divisors (see below), whose sum is σ = 4360384. Its totient is φ = 934344.

The previous prime is 2180159. The next prime is 2180173. The reversal of 2180164 is 4610812.

2180164 is an admirable 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, 38904 + ... + 38959.

2^2180164 is an apocalyptic number.

It is an amenable number.

2180164 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.

2180164 is a wasteful number, since it uses less digits than its factorization.

2180164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77874 (or 77872 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 2180164 is about 1476.5378423867. The cubic root of 2180164 is about 129.6670771247.

Adding to 2180164 its reverse (4610812), we get a palindrome (6790976).

The spelling of 2180164 in words is "two million, one hundred eighty thousand, one hundred sixty-four".