1802839 has 2 divisors, whose sum is σ = 1802840. Its totient is φ = 1802838.

The previous prime is 1802837. The next prime is 1802897. The reversal of 1802839 is 9382081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1802839 - 2¹ = 1802837 is a prime.

Together with 1802837, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1802839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1802837) 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, 901419 + 901420.

It is an arithmetic number, because the mean of its divisors is an integer number (901420).

2^1802839 is an apocalyptic number.

1802839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1802839 is an equidigital number, since it uses as much as digits as its factorization.

1802839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1802839 is about 1342.6984024717. The cubic root of 1802839 is about 121.7079595457.

The spelling of 1802839 in words is "one million, eight hundred two thousand, eight hundred thirty-nine".