13138718 has 8 divisors (see below), whose sum is σ = 19808712. Its totient is φ = 6535816.

The previous prime is 13138703. The next prime is 13138721. The reversal of 13138718 is 81783131.

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

It is a congruent number.

It is an unprimeable number.

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, 16280 + ... + 17067.

It is an arithmetic number, because the mean of its divisors is an integer number (2476089).

Almost surely, 2^13138718 is an apocalyptic number.

13138718 is a deficient number, since it is larger than the sum of its proper divisors (6669994).

13138718 is a wasteful number, since it uses less digits than its factorization.

13138718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33546.

The product of its digits is 4032, while the sum is 32.

The square root of 13138718 is about 3624.7369559735. The cubic root of 13138718 is about 235.9668511327.

The spelling of 13138718 in words is "thirteen million, one hundred thirty-eight thousand, seven hundred eighteen".