1218338 has 16 divisors (see below), whose sum is σ = 2021760. Its totient is φ = 546000.

The previous prime is 1218313. The next prime is 1218367. The reversal of 1218338 is 8338121.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1388 + ... + 2088.

It is an arithmetic number, because the mean of its divisors is an integer number (126360).

2^1218338 is an apocalyptic number.

1218338 is a deficient number, since it is larger than the sum of its proper divisors (803422).

1218338 is a wasteful number, since it uses less digits than its factorization.

1218338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793.

The product of its digits is 1152, while the sum is 26.

The square root of 1218338 is about 1103.7834932631. The cubic root of 1218338 is about 106.8044292047.

It can be divided in two parts, 12183 and 38, that added together give a palindrome (12221).

The spelling of 1218338 in words is "one million, two hundred eighteen thousand, three hundred thirty-eight".