13818433 has 4 divisors (see below), whose sum is σ = 14631300. Its totient is φ = 13005568.

The previous prime is 13818401. The next prime is 13818439. The reversal of 13818433 is 33481831.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9909904 + 3908529 = 3148^2 + 1977^2 .

It is a cyclic number.

It is not a de Polignac number, because 13818433 - 2⁵ = 13818401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13818395 and 13818404.

It is not an unprimeable number, because it can be changed into a prime (13818439) 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 3 ways as a sum of consecutive naturals, for example, 406408 + ... + 406441.

It is an arithmetic number, because the mean of its divisors is an integer number (3657825).

Almost surely, 2^13818433 is an apocalyptic number.

It is an amenable number.

13818433 is a deficient number, since it is larger than the sum of its proper divisors (812867).

13818433 is an equidigital number, since it uses as much as digits as its factorization.

13818433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812866.

The product of its digits is 6912, while the sum is 31.

The square root of 13818433 is about 3717.3152946717. The cubic root of 13818433 is about 239.9677792393.

The spelling of 13818433 in words is "thirteen million, eight hundred eighteen thousand, four hundred thirty-three".