6138245689 has 2 divisors, whose sum is σ = 6138245690. Its totient is φ = 6138245688.

The previous prime is 6138245623. The next prime is 6138245741. The reversal of 6138245689 is 9865428316.

It is an a-pointer prime, because the next prime (6138245741) can be obtained adding 6138245689 to its sum of digits (52).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5847202089 + 291043600 = 76467^2 + 17060^2 .

It is a cyclic number.

It is not a de Polignac number, because 6138245689 - 2²¹ = 6136148537 is a prime.

It is not a weakly prime, because it can be changed into another prime (6138243689) 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, 3069122844 + 3069122845.

It is an arithmetic number, because the mean of its divisors is an integer number (3069122845).

Almost surely, 2^6138245689 is an apocalyptic number.

It is an amenable number.

6138245689 is a deficient number, since it is larger than the sum of its proper divisors (1).

6138245689 is an equidigital number, since it uses as much as digits as its factorization.

6138245689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 52.

The square root of 6138245689 is about 78346.9571138535. The cubic root of 6138245689 is about 1830.9708176647.

The spelling of 6138245689 in words is "six billion, one hundred thirty-eight million, two hundred forty-five thousand, six hundred eighty-nine".