2811841 has 2 divisors, whose sum is σ = 2811842. Its totient is φ = 2811840.

The previous prime is 2811833. The next prime is 2811863. The reversal of 2811841 is 1481182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2792241 + 19600 = 1671^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 2811841 - 2³ = 2811833 is a prime.

It is not a weakly prime, because it can be changed into another prime (2811871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1405920 + 1405921.

It is an arithmetic number, because the mean of its divisors is an integer number (1405921).

2^2811841 is an apocalyptic number.

It is an amenable number.

2811841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2811841 is an equidigital number, since it uses as much as digits as its factorization.

2811841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 512, while the sum is 25.

The square root of 2811841 is about 1676.8544957748. The cubic root of 2811841 is about 141.1443787111.

The spelling of 2811841 in words is "two million, eight hundred eleven thousand, eight hundred forty-one".