13638361 has 8 divisors (see below), whose sum is σ = 14911200. Its totient is φ = 12371040.

The previous prime is 13638347. The next prime is 13638367. The reversal of 13638361 is 16383631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13638361 - 2⁵ = 13638329 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (13638367) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5170 + ... + 7348.

It is an arithmetic number, because the mean of its divisors is an integer number (1863900).

Almost surely, 2^13638361 is an apocalyptic number.

13638361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13638361 is a deficient number, since it is larger than the sum of its proper divisors (1272839).

13638361 is a wasteful number, since it uses less digits than its factorization.

13638361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759.

The product of its digits is 7776, while the sum is 31.

The square root of 13638361 is about 3693.0151637923. The cubic root of 13638361 is about 238.9208551979.

The spelling of 13638361 in words is "thirteen million, six hundred thirty-eight thousand, three hundred sixty-one".