13898437788 has 24 divisors (see below), whose sum is σ = 34337317392. Its totient is φ = 4360294144.

The previous prime is 13898437781. The next prime is 13898437799. The reversal of 13898437788 is 88773489831.

13898437788 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 not an unprimeable number, because it can be changed into a prime (13898437781) by changing a digit.

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, 34064595 + ... + 34065002.

It is an arithmetic number, because the mean of its divisors is an integer number (1430721558).

Almost surely, 2^13898437788 is an apocalyptic number.

It is an amenable number.

13898437788 is an abundant number, since it is smaller than the sum of its proper divisors (20438879604).

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

13898437788 is a wasteful number, since it uses less digits than its factorization.

13898437788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68129621 (or 68129619 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 66.

The spelling of 13898437788 in words is "thirteen billion, eight hundred ninety-eight million, four hundred thirty-seven thousand, seven hundred eighty-eight".