6484438757 has 2 divisors, whose sum is σ = 6484438758. Its totient is φ = 6484438756.

The previous prime is 6484438747. The next prime is 6484438781. The reversal of 6484438757 is 7578344846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3308665441 + 3175773316 = 57521^2 + 56354^2 .

It is a cyclic number.

It is not a de Polignac number, because 6484438757 - 2⁸ = 6484438501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6484438747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3242219378 + 3242219379.

It is an arithmetic number, because the mean of its divisors is an integer number (3242219379).

Almost surely, 2^6484438757 is an apocalyptic number.

It is an amenable number.

6484438757 is a deficient number, since it is larger than the sum of its proper divisors (1).

6484438757 is an equidigital number, since it uses as much as digits as its factorization.

6484438757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18063360, while the sum is 56.

The square root of 6484438757 is about 80526.0129212915. The cubic root of 6484438757 is about 1864.7650931413.

The spelling of 6484438757 in words is "six billion, four hundred eighty-four million, four hundred thirty-eight thousand, seven hundred fifty-seven".