6537777349 has 2 divisors, whose sum is σ = 6537777350. Its totient is φ = 6537777348.

The previous prime is 6537777343. The next prime is 6537777359. The reversal of 6537777349 is 9437777356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5386532449 + 1151244900 = 73393^2 + 33930^2 .

It is a cyclic number.

It is not a de Polignac number, because 6537777349 - 2¹¹ = 6537775301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6537777293 and 6537777302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6537777343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3268888674 + 3268888675.

It is an arithmetic number, because the mean of its divisors is an integer number (3268888675).

Almost surely, 2^6537777349 is an apocalyptic number.

It is an amenable number.

6537777349 is a deficient number, since it is larger than the sum of its proper divisors (1).

6537777349 is an equidigital number, since it uses as much as digits as its factorization.

6537777349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23337720, while the sum is 58.

The square root of 6537777349 is about 80856.5232309676. The cubic root of 6537777349 is about 1869.8640934716.

The spelling of 6537777349 in words is "six billion, five hundred thirty-seven million, seven hundred seventy-seven thousand, three hundred forty-nine".