2261839 has 2 divisors, whose sum is σ = 2261840. Its totient is φ = 2261838.

The previous prime is 2261837. The next prime is 2261851. The reversal of 2261839 is 9381622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2261839 - 2¹ = 2261837 is a prime.

Together with 2261837, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 2²¹ + 6² + 1 + 8⁵ + 3⁶ + 9² .

It is a self number, because there is not a number n which added to its sum of digits gives 2261839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130919 + 1130920.

It is an arithmetic number, because the mean of its divisors is an integer number (1130920).

2^2261839 is an apocalyptic number.

2261839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261839 is an equidigital number, since it uses as much as digits as its factorization.

2261839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 2261839 is about 1503.9411557637. The cubic root of 2261839 is about 131.2664970949.

The spelling of 2261839 in words is "two million, two hundred sixty-one thousand, eight hundred thirty-nine".