13406813389 has 2 divisors, whose sum is σ = 13406813390. Its totient is φ = 13406813388.

The previous prime is 13406813291. The next prime is 13406813543. The reversal of 13406813389 is 98331860431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12735122500 + 671690889 = 112850^2 + 25917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13406813389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13406813089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6703406694 + 6703406695.

It is an arithmetic number, because the mean of its divisors is an integer number (6703406695).

Almost surely, 2^13406813389 is an apocalyptic number.

It is an amenable number.

13406813389 is a deficient number, since it is larger than the sum of its proper divisors (1).

13406813389 is an equidigital number, since it uses as much as digits as its factorization.

13406813389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 13406813389 in words is "thirteen billion, four hundred six million, eight hundred thirteen thousand, three hundred eighty-nine".