6438415386 has 32 divisors (see below), whose sum is σ = 13909307328. Its totient is φ = 1975057920.

The previous prime is 6438415349. The next prime is 6438415409. The reversal of 6438415386 is 6835148346.

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 Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98871 + ... + 150506.

It is an arithmetic number, because the mean of its divisors is an integer number (434665854).

Almost surely, 2^6438415386 is an apocalyptic number.

6438415386 is an abundant number, since it is smaller than the sum of its proper divisors (7470891942).

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

6438415386 is a wasteful number, since it uses less digits than its factorization.

6438415386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249726.

The product of its digits is 1658880, while the sum is 48.

The square root of 6438415386 is about 80239.7369512139. The cubic root of 6438415386 is about 1860.3428845262.

The spelling of 6438415386 in words is "six billion, four hundred thirty-eight million, four hundred fifteen thousand, three hundred eighty-six".