13851118 has 4 divisors (see below), whose sum is σ = 20776680. Its totient is φ = 6925558.

The previous prime is 13851113. The next prime is 13851119. The reversal of 13851118 is 81115831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81115831 = 2711 ⋅29921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13851113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3462778 + ... + 3462781.

It is an arithmetic number, because the mean of its divisors is an integer number (5194170).

Almost surely, 2^13851118 is an apocalyptic number.

13851118 is a deficient number, since it is larger than the sum of its proper divisors (6925562).

13851118 is an equidigital number, since it uses as much as digits as its factorization.

13851118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6925561.

The product of its digits is 960, while the sum is 28.

The square root of 13851118 is about 3721.7090160301. The cubic root of 13851118 is about 240.1568303657.

Adding to 13851118 its reverse (81115831), we get a palindrome (94966949).

The spelling of 13851118 in words is "thirteen million, eight hundred fifty-one thousand, one hundred eighteen".