1816227 has 24 divisors (see below), whose sum is σ = 3035136. Its totient is φ = 1025136.

The previous prime is 1816211. The next prime is 1816237. The reversal of 1816227 is 7226181.

It is not a de Polignac number, because 1816227 - 2⁴ = 1816211 is a prime.

1816227 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1816227.

It is not an unprimeable number, because it can be changed into a prime (1816207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7888 + ... + 8114.

It is an arithmetic number, because the mean of its divisors is an integer number (126464).

2^1816227 is an apocalyptic number.

1816227 is a deficient number, since it is larger than the sum of its proper divisors (1218909).

1816227 is a wasteful number, since it uses less digits than its factorization.

1816227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367 (or 364 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 1816227 is about 1347.6746640046. The cubic root of 1816227 is about 122.0084872712.

The spelling of 1816227 in words is "one million, eight hundred sixteen thousand, two hundred twenty-seven".