2118579 has 4 divisors (see below), whose sum is σ = 2824776. Its totient is φ = 1412384.

The previous prime is 2118547. The next prime is 2118581. The reversal of 2118579 is 9758112.

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

It is a cyclic number.

It is not a de Polignac number, because 2118579 - 2⁵ = 2118547 is a prime.

It is an Ulam number.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2118079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353094 + ... + 353099.

It is an arithmetic number, because the mean of its divisors is an integer number (706194).

2^2118579 is an apocalyptic number.

2118579 is a deficient number, since it is larger than the sum of its proper divisors (706197).

2118579 is an equidigital number, since it uses as much as digits as its factorization.

2118579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706196.

The product of its digits is 5040, while the sum is 33.

The square root of 2118579 is about 1455.5339226552. The cubic root of 2118579 is about 128.4344571298.

The spelling of 2118579 in words is "two million, one hundred eighteen thousand, five hundred seventy-nine".