1838743 has 2 divisors, whose sum is σ = 1838744. Its totient is φ = 1838742.

The previous prime is 1838741. The next prime is 1838747. The reversal of 1838743 is 3478381.

It is a weak prime.

It is an emirp because it is prime and its reverse (3478381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1838743 - 2¹ = 1838741 is a prime.

Together with 1838741, it forms a pair of twin primes.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

1838743 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1838699 and 1838708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1838741) 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, 919371 + 919372.

It is an arithmetic number, because the mean of its divisors is an integer number (919372).

2^1838743 is an apocalyptic number.

1838743 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838743 is an equidigital number, since it uses as much as digits as its factorization.

1838743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 1838743 is about 1356.0025811185. The cubic root of 1838743 is about 122.5106029973.

The spelling of 1838743 in words is "one million, eight hundred thirty-eight thousand, seven hundred forty-three".