13887511389 has 24 divisors (see below), whose sum is σ = 20984750592. Its totient is φ = 8833445280.

The previous prime is 13887511373. The next prime is 13887511397. The reversal of 13887511389 is 98311578831.

It is a happy number.

13887511389 is a `hidden beast` number, since 1 + 388 + 75 + 113 + 89 = 666.

It is not a de Polignac number, because 13887511389 - 2⁴ = 13887511373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13887511399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2317 + ... + 166674.

It is an arithmetic number, because the mean of its divisors is an integer number (874364608).

Almost surely, 2^13887511389 is an apocalyptic number.

It is an amenable number.

13887511389 is a deficient number, since it is larger than the sum of its proper divisors (7097239203).

13887511389 is a wasteful number, since it uses less digits than its factorization.

13887511389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169417 (or 169414 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The spelling of 13887511389 in words is "thirteen billion, eight hundred eighty-seven million, five hundred eleven thousand, three hundred eighty-nine".