18947103 has 16 divisors (see below), whose sum is σ = 28935936. Its totient is φ = 10802880.

The previous prime is 18947099. The next prime is 18947113. The reversal of 18947103 is 30174981.

It is not a de Polignac number, because 18947103 - 2² = 18947099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18947113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13683 + ... + 15003.

It is an arithmetic number, because the mean of its divisors is an integer number (1808496).

Almost surely, 2^18947103 is an apocalyptic number.

18947103 is a deficient number, since it is larger than the sum of its proper divisors (9988833).

18947103 is a wasteful number, since it uses less digits than its factorization.

18947103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 18947103 is about 4352.8270124139. The cubic root of 18947103 is about 266.5923023545.

The spelling of 18947103 in words is "eighteen million, nine hundred forty-seven thousand, one hundred three".