18706103 has 18 divisors (see below), whose sum is σ = 21573504. Its totient is φ = 16209024.

The previous prime is 18706099. The next prime is 18706111. The reversal of 18706103 is 30160781.

It is not a de Polignac number, because 18706103 - 2² = 18706099 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18706123) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 48650 + ... + 49032.

It is an arithmetic number, because the mean of its divisors is an integer number (1198528).

Almost surely, 2^18706103 is an apocalyptic number.

18706103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18706103 is a deficient number, since it is larger than the sum of its proper divisors (2867401).

18706103 is a wasteful number, since it uses less digits than its factorization.

18706103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 18706103 is about 4325.0552597626. The cubic root of 18706103 is about 265.4571579670.

Adding to 18706103 its reverse (30160781), we get a palindrome (48866884).

The spelling of 18706103 in words is "eighteen million, seven hundred six thousand, one hundred three".