13163638 has 8 divisors (see below), whose sum is σ = 20279232. Its totient is φ = 6403896.

The previous prime is 13163621. The next prime is 13163639. The reversal of 13163638 is 83636131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13163639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88870 + ... + 89017.

It is an arithmetic number, because the mean of its divisors is an integer number (2534904).

Almost surely, 2^13163638 is an apocalyptic number.

13163638 is a deficient number, since it is larger than the sum of its proper divisors (7115594).

13163638 is a wasteful number, since it uses less digits than its factorization.

13163638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177926.

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

The square root of 13163638 is about 3628.1728183757. The cubic root of 13163638 is about 236.1159417861.

Adding to 13163638 its reverse (83636131), we get a palindrome (96799769).

The spelling of 13163638 in words is "thirteen million, one hundred sixty-three thousand, six hundred thirty-eight".