13801518 has 96 divisors (see below), whose sum is σ = 34572096. Its totient is φ = 3953664.

The previous prime is 13801507. The next prime is 13801523. The reversal of 13801518 is 81510831.

13801518 is a modest number, since divided by 1518 gives 1380 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 13801491 and 13801500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 260380 + ... + 260432.

It is an arithmetic number, because the mean of its divisors is an integer number (360126).

Almost surely, 2^13801518 is an apocalyptic number.

13801518 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13801518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17286048).

13801518 is an abundant number, since it is smaller than the sum of its proper divisors (20770578).

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

13801518 is a wasteful number, since it uses less digits than its factorization.

13801518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 13801518 is about 3715.0394345148. The cubic root of 13801518 is about 239.8698252400.

The spelling of 13801518 in words is "thirteen million, eight hundred one thousand, five hundred eighteen".