6738809557 has 2 divisors, whose sum is σ = 6738809558. Its totient is φ = 6738809556.

The previous prime is 6738809531. The next prime is 6738809617. The reversal of 6738809557 is 7559088376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3458498481 + 3280311076 = 58809^2 + 57274^2 .

It is a cyclic number.

It is not a de Polignac number, because 6738809557 - 2¹⁵ = 6738776789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6738804557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3369404778 + 3369404779.

It is an arithmetic number, because the mean of its divisors is an integer number (3369404779).

Almost surely, 2^6738809557 is an apocalyptic number.

It is an amenable number.

6738809557 is a deficient number, since it is larger than the sum of its proper divisors (1).

6738809557 is an equidigital number, since it uses as much as digits as its factorization.

6738809557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12700800, while the sum is 58.

The square root of 6738809557 is about 82090.2525090525. The cubic root of 6738809557 is about 1888.8366212697.

The spelling of 6738809557 in words is "six billion, seven hundred thirty-eight million, eight hundred nine thousand, five hundred fifty-seven".