13893920820 has 192 divisors, whose sum is σ = 49289264640. Its totient is φ = 3218835456.

The previous prime is 13893920819. The next prime is 13893920857. The reversal of 13893920820 is 2802939831.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 61129 + ... + 177551.

It is an arithmetic number, because the mean of its divisors is an integer number (256714920).

Almost surely, 2^13893920820 is an apocalyptic number.

13893920820 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 13893920820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24644632320).

13893920820 is an abundant number, since it is smaller than the sum of its proper divisors (35395343820).

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

13893920820 is a wasteful number, since it uses less digits than its factorization.

13893920820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116471 (or 116463 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 13893920820 in words is "thirteen billion, eight hundred ninety-three million, nine hundred twenty thousand, eight hundred twenty".