1884221 has 2 divisors, whose sum is σ = 1884222. Its totient is φ = 1884220.

The previous prime is 1884209. The next prime is 1884227. The reversal of 1884221 is 1224881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 972196 + 912025 = 986^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1884221 - 2¹⁰ = 1883197 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 (1884227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 942110 + 942111.

It is an arithmetic number, because the mean of its divisors is an integer number (942111).

2^1884221 is an apocalyptic number.

It is an amenable number.

1884221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1884221 is an equidigital number, since it uses as much as digits as its factorization.

1884221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1024, while the sum is 26.

The square root of 1884221 is about 1372.6692973910. The cubic root of 1884221 is about 123.5124149528.

The spelling of 1884221 in words is "one million, eight hundred eighty-four thousand, two hundred twenty-one".