1838222 has 4 divisors (see below), whose sum is σ = 2757336. Its totient is φ = 919110.

The previous prime is 1838209. The next prime is 1838233. The reversal of 1838222 is 2228381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2228381 = 97 ⋅22973.

It is a junction number, because it is equal to n+sod(n) for n = 1838191 and 1838200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459554 + ... + 459557.

It is an arithmetic number, because the mean of its divisors is an integer number (689334).

2^1838222 is an apocalyptic number.

1838222 is a deficient number, since it is larger than the sum of its proper divisors (919114).

1838222 is an equidigital number, since it uses as much as digits as its factorization.

1838222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919113.

The product of its digits is 1536, while the sum is 26.

The square root of 1838222 is about 1355.8104587294. The cubic root of 1838222 is about 122.4990309517.

It can be divided in two parts, 18382 and 22, that multiplied together give a palindrome (404404).

The spelling of 1838222 in words is "one million, eight hundred thirty-eight thousand, two hundred twenty-two".