1800019103 has 2 divisors, whose sum is σ = 1800019104. Its totient is φ = 1800019102.

The previous prime is 1800019099. The next prime is 1800019121. The reversal of 1800019103 is 3019100081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1800019103 - 2² = 1800019099 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1800019303) 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 as a sum of consecutive naturals, namely, 900009551 + 900009552.

It is an arithmetic number, because the mean of its divisors is an integer number (900009552).

Almost surely, 2^1800019103 is an apocalyptic number.

1800019103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1800019103 is an equidigital number, since it uses as much as digits as its factorization.

1800019103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1800019103 is about 42426.6320016096. The cubic root of 1800019103 is about 1216.4447023700. Note that the first 3 decimals are identical.

Adding to 1800019103 its reverse (3019100081), we get a palindrome (4819119184).

The spelling of 1800019103 in words is "one billion, eight hundred million, nineteen thousand, one hundred three".