1803103 has 2 divisors, whose sum is σ = 1803104. Its totient is φ = 1803102.

The previous prime is 1803101. The next prime is 1803127. The reversal of 1803103 is 3013081.

It is a weak prime.

It is an emirp because it is prime and its reverse (3013081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1803103 - 2¹ = 1803101 is a prime.

Together with 1803101, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1803101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901551 + 901552.

It is an arithmetic number, because the mean of its divisors is an integer number (901552).

2^1803103 is an apocalyptic number.

1803103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1803103 is an equidigital number, since it uses as much as digits as its factorization.

1803103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1803103 is about 1342.7967083665. The cubic root of 1803103 is about 121.7139000527.

Adding to 1803103 its reverse (3013081), we get a palindrome (4816184).

The spelling of 1803103 in words is "one million, eight hundred three thousand, one hundred three".