1806241 has 2 divisors, whose sum is σ = 1806242. Its totient is φ = 1806240.

The previous prime is 1806227. The next prime is 1806247. The reversal of 1806241 is 1426081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1766241 + 40000 = 1329^2 + 200^2 .

It is an emirp because it is prime and its reverse (1426081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1806241 - 2⁵ = 1806209 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1806247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903120 + 903121.

It is an arithmetic number, because the mean of its divisors is an integer number (903121).

2^1806241 is an apocalyptic number.

It is an amenable number.

1806241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1806241 is an equidigital number, since it uses as much as digits as its factorization.

1806241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1806241 is about 1343.9646572734. The cubic root of 1806241 is about 121.7844667121.

It can be divided in two parts, 180624 and 1, that added together give a square (180625 = 425²).

The spelling of 1806241 in words is "one million, eight hundred six thousand, two hundred forty-one".