12638103 has 4 divisors (see below), whose sum is σ = 16850808. Its totient is φ = 8425400.

The previous prime is 12638099. The next prime is 12638147. The reversal of 12638103 is 30183621.

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 12638103 - 2² = 12638099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638503) 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 in 3 ways as a sum of consecutive naturals, for example, 2106348 + ... + 2106353.

It is an arithmetic number, because the mean of its divisors is an integer number (4212702).

Almost surely, 2^12638103 is an apocalyptic number.

12638103 is a deficient number, since it is larger than the sum of its proper divisors (4212705).

12638103 is an equidigital number, since it uses as much as digits as its factorization.

12638103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4212704.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 12638103 is about 3555.0109704472. The cubic root of 12638103 is about 232.9310030435.

The spelling of 12638103 in words is "twelve million, six hundred thirty-eight thousand, one hundred three".