1842418 has 8 divisors (see below), whose sum is σ = 2792412. Its totient is φ = 911616.

The previous prime is 1842413. The next prime is 1842419. The reversal of 1842418 is 8142481.

It can be written as a sum of positive squares in 2 ways, for example, as 1671849 + 170569 = 1293^2 + 413^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1842413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4555 + ... + 4942.

2^1842418 is an apocalyptic number.

1842418 is a deficient number, since it is larger than the sum of its proper divisors (949994).

1842418 is an equidigital number, since it uses as much as digits as its factorization.

1842418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9596.

The product of its digits is 2048, while the sum is 28.

The square root of 1842418 is about 1357.3569906255. The cubic root of 1842418 is about 122.5921672054.

Adding to 1842418 its reverse (8142481), we get a palindrome (9984899).

It can be divided in two parts, 18 and 42418, that added together give a square (42436 = 206²).

The spelling of 1842418 in words is "one million, eight hundred forty-two thousand, four hundred eighteen".