13811418 has 16 divisors (see below), whose sum is σ = 30692160. Its totient is φ = 4603788.

The previous prime is 13811407. The next prime is 13811419. The reversal of 13811418 is 81411831.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 13811391 and 13811400.

It is not an unprimeable number, because it can be changed into a prime (13811419) 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, 127830 + ... + 127937.

It is an arithmetic number, because the mean of its divisors is an integer number (1918260).

Almost surely, 2^13811418 is an apocalyptic number.

13811418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13811418 is an abundant number, since it is smaller than the sum of its proper divisors (16880742).

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

13811418 is a wasteful number, since it uses less digits than its factorization.

13811418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255778 (or 255772 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 13811418 is about 3716.3716175862. The cubic root of 13811418 is about 239.9271653986.

The spelling of 13811418 in words is "thirteen million, eight hundred eleven thousand, four hundred eighteen".