13931895012 has 144 divisors (see below), whose sum is σ = 40117387968. Its totient is φ = 3739115520.

The previous prime is 13931895001. The next prime is 13931895023. The reversal of 13931895012 is 21059813931.

It is an interprime number because it is at equal distance from previous prime (13931895001) and next prime (13931895023).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6906228 + ... + 6908244.

It is an arithmetic number, because the mean of its divisors is an integer number (278592972).

Almost surely, 2^13931895012 is an apocalyptic number.

13931895012 is a gapful number since it is divisible by the number (12) 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 13931895012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20058693984).

13931895012 is an abundant number, since it is smaller than the sum of its proper divisors (26185492956).

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

13931895012 is a wasteful number, since it uses less digits than its factorization.

13931895012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746 (or 2737 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The spelling of 13931895012 in words is "thirteen billion, nine hundred thirty-one million, eight hundred ninety-five thousand, twelve".