1641841 has 2 divisors, whose sum is σ = 1641842. Its totient is φ = 1641840.

The previous prime is 1641833. The next prime is 1641863. The reversal of 1641841 is 1481461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1600225 + 41616 = 1265^2 + 204^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641841 - 2³ = 1641833 is a prime.

It is not a weakly prime, because it can be changed into another prime (1641811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820920 + 820921.

It is an arithmetic number, because the mean of its divisors is an integer number (820921).

2^1641841 is an apocalyptic number.

It is an amenable number.

1641841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641841 is an equidigital number, since it uses as much as digits as its factorization.

1641841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 25.

The square root of 1641841 is about 1281.3434356175. The cubic root of 1641841 is about 117.9714811861.

The spelling of 1641841 in words is "one million, six hundred forty-one thousand, eight hundred forty-one".