2118194 has 16 divisors (see below), whose sum is σ = 3445848. Its totient is φ = 970752.

The previous prime is 2118187. The next prime is 2118209. The reversal of 2118194 is 4918112.

It can be written as a sum of positive squares in 4 ways, for example, as 1575025 + 543169 = 1255^2 + 737^2 .

It is a super-3 number, since 3×2118194³ = 28511394236743336152, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 6524 + ... + 6840.

2^2118194 is an apocalyptic number.

2118194 is a deficient number, since it is larger than the sum of its proper divisors (1327654).

2118194 is a wasteful number, since it uses less digits than its factorization.

2118194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589.

The product of its digits is 576, while the sum is 26.

The square root of 2118194 is about 1455.4016627722. The cubic root of 2118194 is about 128.4266767164.

The spelling of 2118194 in words is "two million, one hundred eighteen thousand, one hundred ninety-four".