1809226 has 16 divisors (see below), whose sum is σ = 2911104. Its totient is φ = 841104.

The previous prime is 1809221. The next prime is 1809229. The reversal of 1809226 is 6229081.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1809194 and 1809203.

It is not an unprimeable number, because it can be changed into a prime (1809221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1171 + ... + 2233.

It is an arithmetic number, because the mean of its divisors is an integer number (181944).

2^1809226 is an apocalyptic number.

1809226 is the 851-st heptagonal number.

1809226 is a deficient number, since it is larger than the sum of its proper divisors (1101878).

1809226 is a wasteful number, since it uses less digits than its factorization.

1809226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1809226 is about 1345.0747191141. The cubic root of 1809226 is about 121.8515169307.

The spelling of 1809226 in words is "one million, eight hundred nine thousand, two hundred twenty-six".