13908545789 has 2 divisors, whose sum is σ = 13908545790. Its totient is φ = 13908545788.

The previous prime is 13908545759. The next prime is 13908545797. The reversal of 13908545789 is 98754580931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8998040164 + 4910505625 = 94858^2 + 70075^2 .

It is an emirp because it is prime and its reverse (98754580931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13908545789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13908545719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6954272894 + 6954272895.

It is an arithmetic number, because the mean of its divisors is an integer number (6954272895).

Almost surely, 2^13908545789 is an apocalyptic number.

It is an amenable number.

13908545789 is a deficient number, since it is larger than the sum of its proper divisors (1).

13908545789 is an equidigital number, since it uses as much as digits as its factorization.

13908545789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10886400, while the sum is 59.

The spelling of 13908545789 in words is "thirteen billion, nine hundred eight million, five hundred forty-five thousand, seven hundred eighty-nine".