13989210181 has 2 divisors, whose sum is σ = 13989210182. Its totient is φ = 13989210180.

The previous prime is 13989210173. The next prime is 13989210203. The reversal of 13989210181 is 18101298931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13850936100 + 138274081 = 117690^2 + 11759^2 .

It is a cyclic number.

It is not a de Polignac number, because 13989210181 - 2³ = 13989210173 is a prime.

It is a super-2 number, since 2×13989210181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13989210481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6994605090 + 6994605091.

It is an arithmetic number, because the mean of its divisors is an integer number (6994605091).

Almost surely, 2^13989210181 is an apocalyptic number.

It is an amenable number.

13989210181 is a deficient number, since it is larger than the sum of its proper divisors (1).

13989210181 is an equidigital number, since it uses as much as digits as its factorization.

13989210181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 43.

The spelling of 13989210181 in words is "thirteen billion, nine hundred eighty-nine million, two hundred ten thousand, one hundred eighty-one".