2638841 has 2 divisors, whose sum is σ = 2638842. Its totient is φ = 2638840.

The previous prime is 2638793. The next prime is 2638843. The reversal of 2638841 is 1488362.

2638841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1836025 + 802816 = 1355^2 + 896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2638841 is a prime.

Together with 2638843, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2638798 and 2638807.

It is not a weakly prime, because it can be changed into another prime (2638843) 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, 1319420 + 1319421.

It is an arithmetic number, because the mean of its divisors is an integer number (1319421).

2^2638841 is an apocalyptic number.

It is an amenable number.

2638841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2638841 is an equidigital number, since it uses as much as digits as its factorization.

2638841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The square root of 2638841 is about 1624.4509841790. The cubic root of 2638841 is about 138.1882364364.

The spelling of 2638841 in words is "two million, six hundred thirty-eight thousand, eight hundred forty-one".