14638312138 has 8 divisors (see below), whose sum is σ = 21971378880. Its totient is φ = 7314519180.

The previous prime is 14638312121. The next prime is 14638312151. The reversal of 14638312138 is 83121383641.

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

It is a self number, because there is not a number n which added to its sum of digits gives 14638312138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2314498 + ... + 2320813.

It is an arithmetic number, because the mean of its divisors is an integer number (2746422360).

Almost surely, 2^14638312138 is an apocalyptic number.

14638312138 is a deficient number, since it is larger than the sum of its proper divisors (7333066742).

14638312138 is a wasteful number, since it uses less digits than its factorization.

14638312138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4636892.

The product of its digits is 82944, while the sum is 40.

Adding to 14638312138 its reverse (83121383641), we get a palindrome (97759695779).

The spelling of 14638312138 in words is "fourteen billion, six hundred thirty-eight million, three hundred twelve thousand, one hundred thirty-eight".