2118204589 has 4 divisors (see below), whose sum is σ = 2121419520. Its totient is φ = 2114989660.

The previous prime is 2118204577. The next prime is 2118204637. The reversal of 2118204589 is 9854028112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2118204589 - 2²¹ = 2116107437 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118204559) 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, 1606477 + ... + 1607794.

It is an arithmetic number, because the mean of its divisors is an integer number (530354880).

Almost surely, 2^2118204589 is an apocalyptic number.

It is an amenable number.

2118204589 is a deficient number, since it is larger than the sum of its proper divisors (3214931).

2118204589 is an equidigital number, since it uses as much as digits as its factorization.

2118204589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214930.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 2118204589 is about 46023.9566856219. The cubic root of 2118204589 is about 1284.2689072065.

The spelling of 2118204589 in words is "two billion, one hundred eighteen million, two hundred four thousand, five hundred eighty-nine".