13911861940 has 192 divisors, whose sum is σ = 33938472960. Its totient is φ = 4755179520.

The previous prime is 13911861937. The next prime is 13911861973. The reversal of 13911861940 is 4916811931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25432747 + ... + 25433293.

It is an arithmetic number, because the mean of its divisors is an integer number (176762880).

Almost surely, 2^13911861940 is an apocalyptic number.

13911861940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13911861940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16969236480).

13911861940 is an abundant number, since it is smaller than the sum of its proper divisors (20026611020).

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

13911861940 is a wasteful number, since it uses less digits than its factorization.

13911861940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 13911861940 in words is "thirteen billion, nine hundred eleven million, eight hundred sixty-one thousand, nine hundred forty".