18803432103 has 4 divisors (see below), whose sum is σ = 25071242808. Its totient is φ = 12535621400.

The previous prime is 18803432071. The next prime is 18803432143. The reversal of 18803432103 is 30123430881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18803432103 - 2⁵ = 18803432071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18803432143) 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, 3133905348 + ... + 3133905353.

It is an arithmetic number, because the mean of its divisors is an integer number (6267810702).

Almost surely, 2^18803432103 is an apocalyptic number.

18803432103 is a deficient number, since it is larger than the sum of its proper divisors (6267810705).

18803432103 is an equidigital number, since it uses as much as digits as its factorization.

18803432103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6267810704.

The product of its (nonzero) digits is 13824, while the sum is 33.

Adding to 18803432103 its reverse (30123430881), we get a palindrome (48926862984).

The spelling of 18803432103 in words is "eighteen billion, eight hundred three million, four hundred thirty-two thousand, one hundred three".