13898123387 has 2 divisors, whose sum is σ = 13898123388. Its totient is φ = 13898123386.

The previous prime is 13898123341. The next prime is 13898123389. The reversal of 13898123387 is 78332189831.

13898123387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13898123387 - 2²⁰ = 13897074811 is a prime.

It is a super-3 number, since 3×13898123387³ (a number of 31 digits) contains 333 as substring.

Together with 13898123389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13898123389) 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 as a sum of consecutive naturals, namely, 6949061693 + 6949061694.

It is an arithmetic number, because the mean of its divisors is an integer number (6949061694).

Almost surely, 2^13898123387 is an apocalyptic number.

13898123387 is a deficient number, since it is larger than the sum of its proper divisors (1).

13898123387 is an equidigital number, since it uses as much as digits as its factorization.

13898123387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 53.

The spelling of 13898123387 in words is "thirteen billion, eight hundred ninety-eight million, one hundred twenty-three thousand, three hundred eighty-seven".