13953545989 has 2 divisors, whose sum is σ = 13953545990. Its totient is φ = 13953545988.

The previous prime is 13953545941. The next prime is 13953545993. The reversal of 13953545989 is 98954535931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13910315364 + 43230625 = 117942^2 + 6575^2 .

It is a cyclic number.

It is not a de Polignac number, because 13953545989 - 2¹¹ = 13953543941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13953545909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6976772994 + 6976772995.

It is an arithmetic number, because the mean of its divisors is an integer number (6976772995).

Almost surely, 2^13953545989 is an apocalyptic number.

It is an amenable number.

13953545989 is a deficient number, since it is larger than the sum of its proper divisors (1).

13953545989 is an equidigital number, since it uses as much as digits as its factorization.

13953545989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244000, while the sum is 61.

The spelling of 13953545989 in words is "thirteen billion, nine hundred fifty-three million, five hundred forty-five thousand, nine hundred eighty-nine".