1812116 has 6 divisors (see below), whose sum is σ = 3171210. Its totient is φ = 906056.

The previous prime is 1812103. The next prime is 1812121. The reversal of 1812116 is 6112181.

It can be written as a sum of positive squares in only one way, i.e., 1811716 + 400 = 1346^2 + 20^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 226511 + ... + 226518.

It is an arithmetic number, because the mean of its divisors is an integer number (528535).

2^1812116 is an apocalyptic number.

It is an amenable number.

1812116 is a deficient number, since it is larger than the sum of its proper divisors (1359094).

1812116 is a wasteful number, since it uses less digits than its factorization.

1812116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453033 (or 453031 counting only the distinct ones).

The product of its digits is 96, while the sum is 20.

The square root of 1812116 is about 1346.1485802095. The cubic root of 1812116 is about 121.9163629929.

Adding to 1812116 its reverse (6112181), we get a palindrome (7924297).

The spelling of 1812116 in words is "one million, eight hundred twelve thousand, one hundred sixteen".