13818845 has 8 divisors (see below), whose sum is σ = 16987320. Its totient is φ = 10785280.

The previous prime is 13818829. The next prime is 13818853. The reversal of 13818845 is 54881831.

It can be written as a sum of positive squares in 4 ways, for example, as 195364 + 13623481 = 442^2 + 3691^2 .

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

It is not a de Polignac number, because 13818845 - 2⁴ = 13818829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13818799 and 13818808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33500 + ... + 33909.

It is an arithmetic number, because the mean of its divisors is an integer number (2123415).

Almost surely, 2^13818845 is an apocalyptic number.

It is an amenable number.

13818845 is a deficient number, since it is larger than the sum of its proper divisors (3168475).

13818845 is an equidigital number, since it uses as much as digits as its factorization.

13818845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67455.

The product of its digits is 30720, while the sum is 38.

The square root of 13818845 is about 3717.3707105964. The cubic root of 13818845 is about 239.9701641151.

The spelling of 13818845 in words is "thirteen million, eight hundred eighteen thousand, eight hundred forty-five".