1814009 has 4 divisors (see below), whose sum is σ = 1816704. Its totient is φ = 1811316.

The previous prime is 1814003. The next prime is 1814011. The reversal of 1814009 is 9004181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9004181 = 29 ⋅310489.

It is a cyclic number.

It is not a de Polignac number, because 1814009 - 2⁴ = 1813993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1814003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644 + ... + 2010.

It is an arithmetic number, because the mean of its divisors is an integer number (454176).

2^1814009 is an apocalyptic number.

It is an amenable number.

1814009 is a deficient number, since it is larger than the sum of its proper divisors (2695).

1814009 is a wasteful number, since it uses less digits than its factorization.

1814009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1814009 is about 1346.8515137163. The cubic root of 1814009 is about 121.9588009235.

The spelling of 1814009 in words is "one million, eight hundred fourteen thousand, nine".