2106818 has 16 divisors (see below), whose sum is σ = 3672384. Its totient is φ = 887760.

The previous prime is 2106809. The next prime is 2106829. The reversal of 2106818 is 8186012.

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 7 ways as a sum of consecutive naturals, for example, 380 + ... + 2087.

It is an arithmetic number, because the mean of its divisors is an integer number (229524).

2^2106818 is an apocalyptic number.

2106818 is a deficient number, since it is larger than the sum of its proper divisors (1565566).

2106818 is a wasteful number, since it uses less digits than its factorization.

2106818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 2106818 is about 1451.4882018122. The cubic root of 2106818 is about 128.1963539096.

The spelling of 2106818 in words is "two million, one hundred six thousand, eight hundred eighteen".