13815385 has 8 divisors (see below), whose sum is σ = 16603776. Its totient is φ = 11035440.

The previous prime is 13815383. The next prime is 13815421. The reversal of 13815385 is 58351831.

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

It is not a de Polignac number, because 13815385 - 2¹ = 13815383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13815385.

It is not an unprimeable number, because it can be changed into a prime (13815383) by changing a digit.

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, 2352 + ... + 5758.

It is an arithmetic number, because the mean of its divisors is an integer number (2075472).

Almost surely, 2^13815385 is an apocalyptic number.

It is an amenable number.

13815385 is a deficient number, since it is larger than the sum of its proper divisors (2788391).

13815385 is an equidigital number, since it uses as much as digits as its factorization.

13815385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223.

The product of its digits is 14400, while the sum is 34.

The square root of 13815385 is about 3716.9052987667. The cubic root of 13815385 is about 239.9501343159.

The spelling of 13815385 in words is "thirteen million, eight hundred fifteen thousand, three hundred eighty-five".