1813401 has 16 divisors (see below), whose sum is σ = 2745600. Its totient is φ = 1182384.

The previous prime is 1813391. The next prime is 1813421. The reversal of 1813401 is 1043181.

It is not a de Polignac number, because 1813401 - 2⁵ = 1813369 is a prime.

It is a Curzon number.

1813401 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1813421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 555 + ... + 1983.

It is an arithmetic number, because the mean of its divisors is an integer number (171600).

2^1813401 is an apocalyptic number.

It is an amenable number.

1813401 is a deficient number, since it is larger than the sum of its proper divisors (932199).

1813401 is a wasteful number, since it uses less digits than its factorization.

1813401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485 (or 1479 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1813401 is about 1346.6257832078. The cubic root of 1813401 is about 121.9451737884.

Adding to 1813401 its reverse (1043181), we get a palindrome (2856582).

The spelling of 1813401 in words is "one million, eight hundred thirteen thousand, four hundred one".