6938558489 has 2 divisors, whose sum is σ = 6938558490. Its totient is φ = 6938558488.

The previous prime is 6938558479. The next prime is 6938558503. The reversal of 6938558489 is 9848558396.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4664890000 + 2273668489 = 68300^2 + 47683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6938558489 is a prime.

It is not a weakly prime, because it can be changed into another prime (6938558479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3469279244 + 3469279245.

It is an arithmetic number, because the mean of its divisors is an integer number (3469279245).

Almost surely, 2^6938558489 is an apocalyptic number.

It is an amenable number.

6938558489 is a deficient number, since it is larger than the sum of its proper divisors (1).

6938558489 is an equidigital number, since it uses as much as digits as its factorization.

6938558489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74649600, while the sum is 65.

The square root of 6938558489 is about 83298.0101142878. The cubic root of 6938558489 is about 1907.3178996014.

The spelling of 6938558489 in words is "six billion, nine hundred thirty-eight million, five hundred fifty-eight thousand, four hundred eighty-nine".