1808201 has 8 divisors (see below), whose sum is σ = 1865160. Its totient is φ = 1752192.

The previous prime is 1808167. The next prime is 1808207. The reversal of 1808201 is 1028081.

It can be written as a sum of positive squares in 4 ways, for example, as 115600 + 1692601 = 340^2 + 1301^2 .

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 1808201 - 2¹⁰ = 1807177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1808207) 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, 5621 + ... + 5933.

It is an arithmetic number, because the mean of its divisors is an integer number (233145).

2^1808201 is an apocalyptic number.

It is an amenable number.

1808201 is a deficient number, since it is larger than the sum of its proper divisors (56959).

1808201 is a wasteful number, since it uses less digits than its factorization.

1808201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 1808201 is about 1344.6936454078. The cubic root of 1808201 is about 121.8285013062.

The spelling of 1808201 in words is "one million, eight hundred eight thousand, two hundred one".