1830409 has 8 divisors (see below), whose sum is σ = 2183040. Its totient is φ = 1500576.

The previous prime is 1830401. The next prime is 1830419. The reversal of 1830409 is 9040381.

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

It is not a de Polignac number, because 1830409 - 2³ = 1830401 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1830401) 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, 5524 + ... + 5845.

It is an arithmetic number, because the mean of its divisors is an integer number (272880).

2^1830409 is an apocalyptic number.

It is an amenable number.

1830409 is a deficient number, since it is larger than the sum of its proper divisors (352631).

1830409 is a wasteful number, since it uses less digits than its factorization.

1830409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11399.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1830409 is about 1352.9260881512. The cubic root of 1830409 is about 122.3252318301.

The spelling of 1830409 in words is "one million, eight hundred thirty thousand, four hundred nine".