18713103 has 4 divisors (see below), whose sum is σ = 24950808. Its totient is φ = 12475400.

The previous prime is 18713027. The next prime is 18713113. The reversal of 18713103 is 30131781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30131781 = 3 ⋅10043927.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18713103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18713113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3118848 + ... + 3118853.

It is an arithmetic number, because the mean of its divisors is an integer number (6237702).

Almost surely, 2^18713103 is an apocalyptic number.

18713103 is a deficient number, since it is larger than the sum of its proper divisors (6237705).

18713103 is an equidigital number, since it uses as much as digits as its factorization.

18713103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6237704.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 18713103 is about 4325.8644222860. The cubic root of 18713103 is about 265.4902660275.

Adding to 18713103 its reverse (30131781), we get a palindrome (48844884).

The spelling of 18713103 in words is "eighteen million, seven hundred thirteen thousand, one hundred three".