1818229 has 8 divisors (see below), whose sum is σ = 2097920. Its totient is φ = 1543536.

The previous prime is 1818221. The next prime is 1818233. The reversal of 1818229 is 9228181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1818229 - 2³ = 1818221 is a prime.

It is a Duffinian number.

1818229 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1818229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818221) 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, 429 + ... + 1954.

It is an arithmetic number, because the mean of its divisors is an integer number (262240).

2^1818229 is an apocalyptic number.

It is an amenable number.

1818229 is a deficient number, since it is larger than the sum of its proper divisors (279691).

1818229 is a wasteful number, since it uses less digits than its factorization.

1818229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499.

The product of its digits is 2304, while the sum is 31.

The square root of 1818229 is about 1348.4172202994. The cubic root of 1818229 is about 122.0533001898.

The spelling of 1818229 in words is "one million, eight hundred eighteen thousand, two hundred twenty-nine".