6418649359 has 2 divisors, whose sum is σ = 6418649360. Its totient is φ = 6418649358.

The previous prime is 6418649357. The next prime is 6418649381. The reversal of 6418649359 is 9539468146.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6418649359 - 2¹ = 6418649357 is a prime.

It is a super-2 number, since 2×6418649359² = 82398119187582221762, which contains 22 as substring.

Together with 6418649357, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6418649351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3209324679 + 3209324680.

It is an arithmetic number, because the mean of its divisors is an integer number (3209324680).

Almost surely, 2^6418649359 is an apocalyptic number.

6418649359 is a deficient number, since it is larger than the sum of its proper divisors (1).

6418649359 is an equidigital number, since it uses as much as digits as its factorization.

6418649359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 55.

The square root of 6418649359 is about 80116.4737054746. The cubic root of 6418649359 is about 1858.4371732833.

The spelling of 6418649359 in words is "six billion, four hundred eighteen million, six hundred forty-nine thousand, three hundred fifty-nine".