1814389 has 4 divisors (see below), whose sum is σ = 1823200. Its totient is φ = 1805580.

The previous prime is 1814383. The next prime is 1814413. The reversal of 1814389 is 9834181.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 9834181 = 7 ⋅1404883.

It is a cyclic number.

It is not a de Polignac number, because 1814389 - 2³ = 1814381 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1814381) 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, 4089 + ... + 4510.

It is an arithmetic number, because the mean of its divisors is an integer number (455800).

2^1814389 is an apocalyptic number.

It is an amenable number.

1814389 is a deficient number, since it is larger than the sum of its proper divisors (8811).

1814389 is an equidigital number, since it uses as much as digits as its factorization.

1814389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8810.

The product of its digits is 6912, while the sum is 34.

The square root of 1814389 is about 1346.9925760746. The cubic root of 1814389 is about 121.9673163367.

The spelling of 1814389 in words is "one million, eight hundred fourteen thousand, three hundred eighty-nine".