13820002138 has 8 divisors (see below), whose sum is σ = 20730961440. Its totient is φ = 6909681660.

The previous prime is 13820002129. The next prime is 13820002139. The reversal of 13820002138 is 83120002831.

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

It is not an unprimeable number, because it can be changed into a prime (13820002139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101358 + ... + 194713.

It is an arithmetic number, because the mean of its divisors is an integer number (2591370180).

Almost surely, 2^13820002138 is an apocalyptic number.

13820002138 is a deficient number, since it is larger than the sum of its proper divisors (6910959302).

13820002138 is a wasteful number, since it uses less digits than its factorization.

13820002138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319412.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 13820002138 its reverse (83120002831), we get a palindrome (96940004969).

The spelling of 13820002138 in words is "thirteen billion, eight hundred twenty million, two thousand, one hundred thirty-eight".