13343981489 has 2 divisors, whose sum is σ = 13343981490. Its totient is φ = 13343981488.

The previous prime is 13343981473. The next prime is 13343981569. The reversal of 13343981489 is 98418934331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7993790464 + 5350191025 = 89408^2 + 73145^2 .

It is a cyclic number.

It is not a de Polignac number, because 13343981489 - 2⁴ = 13343981473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13343981489.

It is not a weakly prime, because it can be changed into another prime (13343981389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6671990744 + 6671990745.

It is an arithmetic number, because the mean of its divisors is an integer number (6671990745).

Almost surely, 2^13343981489 is an apocalyptic number.

It is an amenable number.

13343981489 is a deficient number, since it is larger than the sum of its proper divisors (1).

13343981489 is an equidigital number, since it uses as much as digits as its factorization.

13343981489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2239488, while the sum is 53.

The spelling of 13343981489 in words is "thirteen billion, three hundred forty-three million, nine hundred eighty-one thousand, four hundred eighty-nine".