13818445 has 8 divisors (see below), whose sum is σ = 16674840. Its totient is φ = 10992960.

The previous prime is 13818439. The next prime is 13818451. The reversal of 13818445 is 54481831.

It is an interprime number because it is at equal distance from previous prime (13818439) and next prime (13818451).

It can be written as a sum of positive squares in 4 ways, for example, as 24649 + 13793796 = 157^2 + 3714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13818445 - 2⁹ = 13817933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13818445.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6730 + ... + 8539.

It is an arithmetic number, because the mean of its divisors is an integer number (2084355).

Almost surely, 2^13818445 is an apocalyptic number.

It is an amenable number.

13818445 is a deficient number, since it is larger than the sum of its proper divisors (2856395).

13818445 is a wasteful number, since it uses less digits than its factorization.

13818445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15455.

The product of its digits is 15360, while the sum is 34.

The square root of 13818445 is about 3717.3169087394. The cubic root of 13818445 is about 239.9678487023.

The spelling of 13818445 in words is "thirteen million, eight hundred eighteen thousand, four hundred forty-five".