2118158 has 16 divisors (see below), whose sum is σ = 3822720. Its totient is φ = 859896.

The previous prime is 2118121. The next prime is 2118163. The reversal of 2118158 is 8518112.

It is a congruent number.

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, 3716 + ... + 4247.

It is an arithmetic number, because the mean of its divisors is an integer number (238920).

2^2118158 is an apocalyptic number.

2118158 is a deficient number, since it is larger than the sum of its proper divisors (1704562).

2118158 is a wasteful number, since it uses less digits than its factorization.

2118158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7991.

The product of its digits is 640, while the sum is 26.

The square root of 2118158 is about 1455.3892949998. The cubic root of 2118158 is about 128.4259491490.

The spelling of 2118158 in words is "two million, one hundred eighteen thousand, one hundred fifty-eight".