2118808 has 24 divisors (see below), whose sum is σ = 4101300. Its totient is φ = 1025904.

The previous prime is 2118803. The next prime is 2118811. The reversal of 2118808 is 8088112.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31591 + ... + 31657.

2^2118808 is an apocalyptic number.

It is an amenable number.

2118808 is a deficient number, since it is larger than the sum of its proper divisors (1982492).

2118808 is an equidigital number, since it uses as much as digits as its factorization.

2118808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 2118808 is about 1455.6125858208. The cubic root of 2118808 is about 128.4390845131.

It can be divided in two parts, 2118 and 808, that added together give a triangular number (2926 = T₇₆).

The spelling of 2118808 in words is "two million, one hundred eighteen thousand, eight hundred eight".