2118806 has 8 divisors (see below), whose sum is σ = 3316464. Its totient is φ = 1013320.

The previous prime is 2118803. The next prime is 2118811. The reversal of 2118806 is 6088112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22985 + ... + 23076.

It is an arithmetic number, because the mean of its divisors is an integer number (414558).

2^2118806 is an apocalyptic number.

2118806 is a deficient number, since it is larger than the sum of its proper divisors (1197658).

2118806 is a wasteful number, since it uses less digits than its factorization.

2118806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46086.

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

The square root of 2118806 is about 1455.6118988247. The cubic root of 2118806 is about 128.4390441007.

The spelling of 2118806 in words is "two million, one hundred eighteen thousand, eight hundred six".