1830401 has 2 divisors, whose sum is σ = 1830402. Its totient is φ = 1830400.

The previous prime is 1830391. The next prime is 1830419. The reversal of 1830401 is 1040381.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1560001 + 270400 = 1249^2 + 520^2 .

It is an emirp because it is prime and its reverse (1040381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1830401 - 2⁶ = 1830337 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1830401.

It is not a weakly prime, because it can be changed into another prime (1830421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 915200 + 915201.

It is an arithmetic number, because the mean of its divisors is an integer number (915201).

2^1830401 is an apocalyptic number.

It is an amenable number.

1830401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1830401 is an equidigital number, since it uses as much as digits as its factorization.

1830401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1830401 is about 1352.9231315932. The cubic root of 1830401 is about 122.3250536179.

Adding to 1830401 its reverse (1040381), we get a palindrome (2870782).

The spelling of 1830401 in words is "one million, eight hundred thirty thousand, four hundred one".