13919617940 has 24 divisors (see below), whose sum is σ = 30502120320. Its totient is φ = 5325766688.

The previous prime is 13919617913. The next prime is 13919617951. The reversal of 13919617940 is 4971691931.

It is a happy number.

13919617940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15129560 + ... + 15130479.

It is an arithmetic number, because the mean of its divisors is an integer number (1270921680).

Almost surely, 2^13919617940 is an apocalyptic number.

13919617940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13919617940 is an abundant number, since it is smaller than the sum of its proper divisors (16582502380).

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

13919617940 is a wasteful number, since it uses less digits than its factorization.

13919617940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30260071 (or 30260069 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 50.

The spelling of 13919617940 in words is "thirteen billion, nine hundred nineteen million, six hundred seventeen thousand, nine hundred forty".