1838216 has 8 divisors (see below), whose sum is σ = 3446670. Its totient is φ = 919104.

The previous prime is 1838209. The next prime is 1838233. The reversal of 1838216 is 6128381.

It can be written as a sum of positive squares in only one way, i.e., 1833316 + 4900 = 1354^2 + 70^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114881 + ... + 114896.

2^1838216 is an apocalyptic number.

It is an amenable number.

1838216 is a deficient number, since it is larger than the sum of its proper divisors (1608454).

1838216 is a wasteful number, since it uses less digits than its factorization.

1838216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229783 (or 229779 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 1838216 is about 1355.8082460289. The cubic root of 1838216 is about 122.4988976716.

The spelling of 1838216 in words is "one million, eight hundred thirty-eight thousand, two hundred sixteen".