6438518607 has 32 divisors (see below), whose sum is σ = 8977351680. Its totient is φ = 4099455360.

The previous prime is 6438518573. The next prime is 6438518623. The reversal of 6438518607 is 7068158346.

It is not a de Polignac number, because 6438518607 - 2¹⁸ = 6438256463 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6438518677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4523898 + ... + 4525320.

It is an arithmetic number, because the mean of its divisors is an integer number (280542240).

Almost surely, 2^6438518607 is an apocalyptic number.

6438518607 is a deficient number, since it is larger than the sum of its proper divisors (2538833073).

6438518607 is a wasteful number, since it uses less digits than its factorization.

6438518607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983.

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 6438518607 is about 80240.3801523896. The cubic root of 6438518607 is about 1860.3528261767.

The spelling of 6438518607 in words is "six billion, four hundred thirty-eight million, five hundred eighteen thousand, six hundred seven".