13845918 has 32 divisors (see below), whose sum is σ = 29067264. Its totient is φ = 4391712.

The previous prime is 13845917. The next prime is 13845919. The reversal of 13845918 is 81954831.

It is an interprime number because it is at equal distance from previous prime (13845917) and next prime (13845919).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13845911) 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 15 ways as a sum of consecutive naturals, for example, 9771 + ... + 11097.

It is an arithmetic number, because the mean of its divisors is an integer number (908352).

Almost surely, 2^13845918 is an apocalyptic number.

13845918 is an abundant number, since it is smaller than the sum of its proper divisors (15221346).

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

13845918 is a wasteful number, since it uses less digits than its factorization.

13845918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416.

The product of its digits is 34560, while the sum is 39.

The square root of 13845918 is about 3721.0103466666. The cubic root of 13845918 is about 240.1267733015.

It can be divided in two parts, 138 and 45918, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 13845918 in words is "thirteen million, eight hundred forty-five thousand, nine hundred eighteen".