2164168 has 16 divisors (see below), whose sum is σ = 4296780. Its totient is φ = 1018368.

The previous prime is 2164121. The next prime is 2164171. The reversal of 2164168 is 8614612.

It can be written as a sum of positive squares in 2 ways, for example, as 1954404 + 209764 = 1398^2 + 458^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7821 + ... + 8092.

2^2164168 is an apocalyptic number.

It is an amenable number.

2164168 is a deficient number, since it is larger than the sum of its proper divisors (2132612).

2164168 is a wasteful number, since it uses less digits than its factorization.

2164168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15936 (or 15932 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 2164168 is about 1471.1111446794. Note that the first 4 decimals coincide. The cubic root of 2164168 is about 129.3491731996.

It can be divided in two parts, 2164 and 168, that added together give a palindrome (2332).

The spelling of 2164168 in words is "two million, one hundred sixty-four thousand, one hundred sixty-eight".