1812285 has 48 divisors (see below), whose sum is σ = 3504384. Its totient is φ = 861696.

The previous prime is 1812271. The next prime is 1812301. The reversal of 1812285 is 5822181.

It is not a de Polignac number, because 1812285 - 2⁴ = 1812269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17544 + ... + 17646.

It is an arithmetic number, because the mean of its divisors is an integer number (73008).

2^1812285 is an apocalyptic number.

1812285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1812285 is a deficient number, since it is larger than the sum of its proper divisors (1692099).

1812285 is a wasteful number, since it uses less digits than its factorization.

1812285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 151 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 1812285 is about 1346.2113504201. The cubic root of 1812285 is about 121.9201528947.

The spelling of 1812285 in words is "one million, eight hundred twelve thousand, two hundred eighty-five".