2218359 has 16 divisors (see below), whose sum is σ = 3475584. Its totient is φ = 1240800.

The previous prime is 2218351. The next prime is 2218361. The reversal of 2218359 is 9538122.

It is a happy number.

It is not a de Polignac number, because 2218359 - 2³ = 2218351 is a prime.

It is a super-2 number, since 2×2218359² = 9842233305762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2157 + ... + 3014.

It is an arithmetic number, because the mean of its divisors is an integer number (217224).

2^2218359 is an apocalyptic number.

2218359 is a deficient number, since it is larger than the sum of its proper divisors (1257225).

2218359 is a wasteful number, since it uses less digits than its factorization.

2218359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5198.

The product of its digits is 4320, while the sum is 30.

The square root of 2218359 is about 1489.4156572294. The cubic root of 2218359 is about 130.4199241577.

It can be divided in two parts, 22 and 18359, that added together give a palindrome (18381).

The spelling of 2218359 in words is "two million, two hundred eighteen thousand, three hundred fifty-nine".