1800801 has 12 divisors (see below), whose sum is σ = 2738320. Its totient is φ = 1137240.

The previous prime is 1800787. The next prime is 1800803. The reversal of 1800801 is 1080081.

It is a happy number.

It is not a de Polignac number, because 1800801 - 2¹⁸ = 1538657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1800803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5095 + ... + 5436.

2^1800801 is an apocalyptic number.

It is an amenable number.

1800801 is a deficient number, since it is larger than the sum of its proper divisors (937519).

1800801 is a wasteful number, since it uses less digits than its factorization.

1800801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10556 (or 10553 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 1800801 is about 1341.9392683725. The cubic root of 1800801 is about 121.6620811015.

Adding to 1800801 its reverse (1080081), we get a palindrome (2880882).

It can be divided in two parts, 180080 and 1, that added together give a palindrome (180081).

The spelling of 1800801 in words is "one million, eight hundred thousand, eight hundred one".