1811041 has 2 divisors, whose sum is σ = 1811042. Its totient is φ = 1811040.

The previous prime is 1810999. The next prime is 1811053. The reversal of 1811041 is 1401181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 992016 + 819025 = 996^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1811041 - 2¹¹ = 1808993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1811071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 905520 + 905521.

It is an arithmetic number, because the mean of its divisors is an integer number (905521).

2^1811041 is an apocalyptic number.

It is an amenable number.

1811041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1811041 is an equidigital number, since it uses as much as digits as its factorization.

1811041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 1811041 is about 1345.7492336985. The cubic root of 1811041 is about 121.8922501115.

The spelling of 1811041 in words is "one million, eight hundred eleven thousand, forty-one".