13805418 has 16 divisors (see below), whose sum is σ = 30121056. Its totient is φ = 4183440.

The previous prime is 13805401. The next prime is 13805431. The reversal of 13805418 is 81450831.

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, 104521 + ... + 104652.

It is an arithmetic number, because the mean of its divisors is an integer number (1882566).

Almost surely, 2^13805418 is an apocalyptic number.

13805418 is an abundant number, since it is smaller than the sum of its proper divisors (16315638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13805418 is a wasteful number, since it uses less digits than its factorization.

13805418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209189.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 13805418 is about 3715.5642909254. The cubic root of 13805418 is about 239.8924170596.

The spelling of 13805418 in words is "thirteen million, eight hundred five thousand, four hundred eighteen".