13128809189 has 2 divisors, whose sum is σ = 13128809190. Its totient is φ = 13128809188.

The previous prime is 13128809159. The next prime is 13128809209. The reversal of 13128809189 is 98190882131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9574622500 + 3554186689 = 97850^2 + 59617^2 .

It is a cyclic number.

It is not a de Polignac number, because 13128809189 - 2²⁴ = 13112031973 is a prime.

It is a super-3 number, since 3×13128809189³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13128809129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6564404594 + 6564404595.

It is an arithmetic number, because the mean of its divisors is an integer number (6564404595).

Almost surely, 2^13128809189 is an apocalyptic number.

It is an amenable number.

13128809189 is a deficient number, since it is larger than the sum of its proper divisors (1).

13128809189 is an equidigital number, since it uses as much as digits as its factorization.

13128809189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 50.

The spelling of 13128809189 in words is "thirteen billion, one hundred twenty-eight million, eight hundred nine thousand, one hundred eighty-nine".