2118841 has 2 divisors, whose sum is σ = 2118842. Its totient is φ = 2118840.

The previous prime is 2118833. The next prime is 2118871. The reversal of 2118841 is 1488112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1510441 + 608400 = 1229^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 2118841 - 2³ = 2118833 is a prime.

It is a nialpdrome in base 12.

It is not a weakly prime, because it can be changed into another prime (2118811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059420 + 1059421.

It is an arithmetic number, because the mean of its divisors is an integer number (1059421).

2^2118841 is an apocalyptic number.

It is an amenable number.

2118841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2118841 is an equidigital number, since it uses as much as digits as its factorization.

2118841 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2118841 is about 1455.6239212104. The cubic root of 2118841 is about 128.4397513137.

The spelling of 2118841 in words is "two million, one hundred eighteen thousand, eight hundred forty-one".