2118659 has 6 divisors (see below), whose sum is σ = 2250924. Its totient is φ = 1993760.

The previous prime is 2118643. The next prime is 2118661. The reversal of 2118659 is 9568112.

It is not a de Polignac number, because 2118659 - 2⁴ = 2118643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2118629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3377 + ... + 3954.

It is an arithmetic number, because the mean of its divisors is an integer number (375154).

2^2118659 is an apocalyptic number.

2118659 is a deficient number, since it is larger than the sum of its proper divisors (132265).

2118659 is an equidigital number, since it uses as much as digits as its factorization.

2118659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7365 (or 7348 counting only the distinct ones).

The product of its digits is 4320, while the sum is 32.

The square root of 2118659 is about 1455.5614037202. The cubic root of 2118659 is about 128.4360737208.

The spelling of 2118659 in words is "two million, one hundred eighteen thousand, six hundred fifty-nine".