13818303 has 16 divisors (see below), whose sum is σ = 20563200. Its totient is φ = 9171000.

The previous prime is 13818289. The next prime is 13818313. The reversal of 13818303 is 30381831.

It is a de Polignac number, because none of the positive numbers 2^k-13818303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13818313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5758 + ... + 7796.

It is an arithmetic number, because the mean of its divisors is an integer number (1285200).

Almost surely, 2^13818303 is an apocalyptic number.

13818303 is a deficient number, since it is larger than the sum of its proper divisors (6744897).

13818303 is a wasteful number, since it uses less digits than its factorization.

13818303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299 (or 2293 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 13818303 is about 3717.2978088929. The cubic root of 13818303 is about 239.9670267201.

The spelling of 13818303 in words is "thirteen million, eight hundred eighteen thousand, three hundred three".