1812210112 has 42 divisors (see below), whose sum is σ = 3759324968. Its totient is φ = 866692992.

The previous prime is 1812210073. The next prime is 1812210133. The reversal of 1812210112 is 2110122181.

It is a self number, because there is not a number n which added to its sum of digits gives 1812210112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7093 + ... + 60619.

Almost surely, 2^1812210112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1812210112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1879662484).

1812210112 is an abundant number, since it is smaller than the sum of its proper divisors (1947114856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1812210112 is an equidigital number, since it uses as much as digits as its factorization.

1812210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53585 (or 53552 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

The square root of 1812210112 is about 42570.0612167753. The cubic root of 1812210112 is about 1219.1847352635.

Adding to 1812210112 its reverse (2110122181), we get a palindrome (3922332293).

The spelling of 1812210112 in words is "one billion, eight hundred twelve million, two hundred ten thousand, one hundred twelve".