1812112 has 20 divisors (see below), whose sum is σ = 3607036. Its totient is φ = 881280.

The previous prime is 1812103. The next prime is 1812121. The reversal of 1812112 is 2112181.

It is an interprime number because it is at equal distance from previous prime (1812103) and next prime (1812121).

It can be written as a sum of positive squares in 2 ways, for example, as 1679616 + 132496 = 1296^2 + 364^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 939 + ... + 2122.

2^1812112 is an apocalyptic number.

It is an amenable number.

1812112 is a deficient number, since it is larger than the sum of its proper divisors (1794924).

1812112 is a wasteful number, since it uses less digits than its factorization.

1812112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106 (or 3100 counting only the distinct ones).

The product of its digits is 32, while the sum is 16.

The square root of 1812112 is about 1346.1470944886. The cubic root of 1812112 is about 121.9162732883.

Adding to 1812112 its reverse (2112181), we get a palindrome (3924293).

The spelling of 1812112 in words is "one million, eight hundred twelve thousand, one hundred twelve".