13911018 has 16 divisors (see below), whose sum is σ = 30351456. Its totient is φ = 4215440.

The previous prime is 13911011. The next prime is 13911043. The reversal of 13911018 is 81011931.

13911018 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13911011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105321 + ... + 105452.

It is an arithmetic number, because the mean of its divisors is an integer number (1896966).

Almost surely, 2^13911018 is an apocalyptic number.

13911018 is an abundant number, since it is smaller than the sum of its proper divisors (16440438).

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

13911018 is a wasteful number, since it uses less digits than its factorization.

13911018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210789.

The product of its (nonzero) digits is 216, while the sum is 24.

The square root of 13911018 is about 3729.7477126476. The cubic root of 13911018 is about 240.5025234469.

Adding to 13911018 its reverse (81011931), we get a palindrome (94922949).

It can be divided in two parts, 139110 and 18, that added together give a triangular number (139128 = T₅₂₇).

The spelling of 13911018 in words is "thirteen million, nine hundred eleven thousand, eighteen".