1802103 has 4 divisors (see below), whose sum is σ = 2402808. Its totient is φ = 1201400.

The previous prime is 1802083. The next prime is 1802107. The reversal of 1802103 is 3012081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3012081 = 3 ⋅1004027.

It is a cyclic number.

It is not a de Polignac number, because 1802103 - 2⁶ = 1802039 is a prime.

It is a D-number.

1802103 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1802107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300348 + ... + 300353.

It is an arithmetic number, because the mean of its divisors is an integer number (600702).

2^1802103 is an apocalyptic number.

1802103 is a deficient number, since it is larger than the sum of its proper divisors (600705).

1802103 is an equidigital number, since it uses as much as digits as its factorization.

1802103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600704.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1802103 is about 1342.4242995417. The cubic root of 1802103 is about 121.6913950696.

Adding to 1802103 its product of nonzero digits (48), we get a triangular number (1802151 = T₁₈₉₈).

Adding to 1802103 its reverse (3012081), we get a palindrome (4814184).

The spelling of 1802103 in words is "one million, eight hundred two thousand, one hundred three".