6364765549 has 2 divisors, whose sum is σ = 6364765550. Its totient is φ = 6364765548.

The previous prime is 6364765543. The next prime is 6364765571. The reversal of 6364765549 is 9455674636.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5072003524 + 1292762025 = 71218^2 + 35955^2 .

It is a cyclic number.

It is not a de Polignac number, because 6364765549 - 2¹⁷ = 6364634477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6364765549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6364765543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3182382774 + 3182382775.

It is an arithmetic number, because the mean of its divisors is an integer number (3182382775).

Almost surely, 2^6364765549 is an apocalyptic number.

It is an amenable number.

6364765549 is a deficient number, since it is larger than the sum of its proper divisors (1).

6364765549 is an equidigital number, since it uses as much as digits as its factorization.

6364765549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16329600, while the sum is 55.

The square root of 6364765549 is about 79779.4807516319. The cubic root of 6364765549 is about 1853.2220984564. Note that the first 3 decimals are identical.

The spelling of 6364765549 in words is "six billion, three hundred sixty-four million, seven hundred sixty-five thousand, five hundred forty-nine".