6459418638 has 24 divisors (see below), whose sum is σ = 14732008200. Its totient is φ = 2039816304.

The previous prime is 6459418627. The next prime is 6459418639. The reversal of 6459418638 is 8368149546.

6459418638 is a `hidden beast` number, since 6 + 4 + 594 + 18 + 6 + 38 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6459418639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9443253 + ... + 9443936.

It is an arithmetic number, because the mean of its divisors is an integer number (613833675).

Almost surely, 2^6459418638 is an apocalyptic number.

6459418638 is an abundant number, since it is smaller than the sum of its proper divisors (8272589562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6459418638 is a wasteful number, since it uses less digits than its factorization.

6459418638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18887216 (or 18887213 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 6459418638 is about 80370.5085090296. The cubic root of 6459418638 is about 1862.3636115192.

The spelling of 6459418638 in words is "six billion, four hundred fifty-nine million, four hundred eighteen thousand, six hundred thirty-eight".