1812203036 has 12 divisors (see below), whose sum is σ = 3624406128. Its totient is φ = 776658432.

The previous prime is 1812203021. The next prime is 1812203047. The reversal of 1812203036 is 6303022181.

1812203036 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1812202996 and 1812203014.

It is a congruent number.

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, 32360741 + ... + 32360796.

It is an arithmetic number, because the mean of its divisors is an integer number (302033844).

Almost surely, 2^1812203036 is an apocalyptic number.

It is an amenable number.

1812203036 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1812203036 is a wasteful number, since it uses less digits than its factorization.

1812203036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64721548 (or 64721546 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1812203036 is about 42569.9781066422. The cubic root of 1812203036 is about 1219.1831484419.

The spelling of 1812203036 in words is "one billion, eight hundred twelve million, two hundred three thousand, thirty-six".