13894144386 has 32 divisors (see below), whose sum is σ = 28968731136. Its totient is φ = 4437600000.

The previous prime is 13894144373. The next prime is 13894144423. The reversal of 13894144386 is 68344149831.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351015 + ... + 388586.

It is an arithmetic number, because the mean of its divisors is an integer number (905272848).

Almost surely, 2^13894144386 is an apocalyptic number.

13894144386 is an abundant number, since it is smaller than the sum of its proper divisors (15074586750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13894144386 is a wasteful number, since it uses less digits than its factorization.

13894144386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739738.

The product of its digits is 1990656, while the sum is 51.

Subtracting 13894144386 from its reverse (68344149831), we obtain a palindrome (54450005445).

The spelling of 13894144386 in words is "thirteen billion, eight hundred ninety-four million, one hundred forty-four thousand, three hundred eighty-six".