2118667189 has 4 divisors (see below), whose sum is σ = 2153399500. Its totient is φ = 2083934880.

The previous prime is 2118667157. The next prime is 2118667217. The reversal of 2118667189 is 9817668112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126562500 + 1992104689 = 11250^2 + 44633^2 .

It is a cyclic number.

It is not a de Polignac number, because 2118667189 - 2⁵ = 2118667157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118667129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17366064 + ... + 17366185.

It is an arithmetic number, because the mean of its divisors is an integer number (538349875).

Almost surely, 2^2118667189 is an apocalyptic number.

It is an amenable number.

2118667189 is a deficient number, since it is larger than the sum of its proper divisors (34732311).

2118667189 is an equidigital number, since it uses as much as digits as its factorization.

2118667189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34732310.

The product of its digits is 290304, while the sum is 49.

The square root of 2118667189 is about 46028.9820547880. The cubic root of 2118667189 is about 1284.3623919680.

The spelling of 2118667189 in words is "two billion, one hundred eighteen million, six hundred sixty-seven thousand, one hundred eighty-nine".