1812801 has 8 divisors (see below), whose sum is σ = 2423520. Its totient is φ = 1205312.

The previous prime is 1812793. The next prime is 1812817. The reversal of 1812801 is 1082181.

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

It is a cyclic number.

It is not a de Polignac number, because 1812801 - 2³ = 1812793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1812821) 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, 1270 + ... + 2288.

It is an arithmetic number, because the mean of its divisors is an integer number (302940).

2^1812801 is an apocalyptic number.

It is an amenable number.

1812801 is a deficient number, since it is larger than the sum of its proper divisors (610719).

1812801 is a wasteful number, since it uses less digits than its factorization.

1812801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615.

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 1812801 is about 1346.4029857364. The cubic root of 1812801 is about 121.9317229714.

Adding to 1812801 its reverse (1082181), we get a palindrome (2894982).

The spelling of 1812801 in words is "one million, eight hundred twelve thousand, eight hundred one".