1823218 has 8 divisors (see below), whose sum is σ = 2781360. Its totient is φ = 896100.

The previous prime is 1823207. The next prime is 1823219. The reversal of 1823218 is 8123281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1823192 and 1823201.

It is not an unprimeable number, because it can be changed into a prime (1823219) 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 3 ways as a sum of consecutive naturals, for example, 7608 + ... + 7843.

It is an arithmetic number, because the mean of its divisors is an integer number (347670).

2^1823218 is an apocalyptic number.

1823218 is a deficient number, since it is larger than the sum of its proper divisors (958142).

1823218 is a wasteful number, since it uses less digits than its factorization.

1823218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15512.

The product of its digits is 768, while the sum is 25.

The square root of 1823218 is about 1350.2658997398. The cubic root of 1823218 is about 122.1648313967.

Adding to 1823218 its reverse (8123281), we get a palindrome (9946499).

It can be divided in two parts, 182321 and 8, that added together give a square (182329 = 427²).

The spelling of 1823218 in words is "one million, eight hundred twenty-three thousand, two hundred eighteen".