13719638 has 16 divisors (see below), whose sum is σ = 21694176. Its totient is φ = 6494400.

The previous prime is 13719631. The next prime is 13719649. The reversal of 13719638 is 83691731.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13719631) 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, 3170 + ... + 6122.

It is an arithmetic number, because the mean of its divisors is an integer number (1355886).

Almost surely, 2^13719638 is an apocalyptic number.

13719638 is a deficient number, since it is larger than the sum of its proper divisors (7974538).

13719638 is a wasteful number, since it uses less digits than its factorization.

13719638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079.

The product of its digits is 27216, while the sum is 38.

The square root of 13719638 is about 3704.0029697612. The cubic root of 13719638 is about 239.3945270356.

The spelling of 13719638 in words is "thirteen million, seven hundred nineteen thousand, six hundred thirty-eight".