1809227 has 6 divisors (see below), whose sum is σ = 2104668. Its totient is φ = 1550724.

The previous prime is 1809221. The next prime is 1809229. The reversal of 1809227 is 7229081.

It is a happy number.

It is not a de Polignac number, because 1809227 - 2⁴ = 1809211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1809227.

It is not an unprimeable number, because it can be changed into a prime (1809221) 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 5 ways as a sum of consecutive naturals, for example, 18413 + ... + 18510.

It is an arithmetic number, because the mean of its divisors is an integer number (350778).

2^1809227 is an apocalyptic number.

1809227 is a deficient number, since it is larger than the sum of its proper divisors (295441).

1809227 is an equidigital number, since it uses as much as digits as its factorization.

1809227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36937 (or 36930 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1809227 is about 1345.0750908407. The cubic root of 1809227 is about 121.8515393807.

The spelling of 1809227 in words is "one million, eight hundred nine thousand, two hundred twenty-seven".