1644341 has 2 divisors, whose sum is σ = 1644342. Its totient is φ = 1644340.

The previous prime is 1644311. The next prime is 1644347. The reversal of 1644341 is 1434461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1615441 + 28900 = 1271^2 + 170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1644341 is a prime.

It is a super-3 number, since 3×1644341³ = 13338190369396631463, which contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1644347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 822170 + 822171.

It is an arithmetic number, because the mean of its divisors is an integer number (822171).

2^1644341 is an apocalyptic number.

It is an amenable number.

1644341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1644341 is an equidigital number, since it uses as much as digits as its factorization.

1644341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 1644341 is about 1282.3186031560. The cubic root of 1644341 is about 118.0313284623.

The spelling of 1644341 in words is "one million, six hundred forty-four thousand, three hundred forty-one".