6438075158 has 16 divisors (see below), whose sum is σ = 9826018224. Its totient is φ = 3162978720.

The previous prime is 6438075131. The next prime is 6438075169. The reversal of 6438075158 is 8515708346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7313 + ... + 113708.

It is an arithmetic number, because the mean of its divisors is an integer number (614126139).

Almost surely, 2^6438075158 is an apocalyptic number.

6438075158 is a deficient number, since it is larger than the sum of its proper divisors (3387943066).

6438075158 is a wasteful number, since it uses less digits than its factorization.

6438075158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121487.

The product of its (nonzero) digits is 806400, while the sum is 47.

The square root of 6438075158 is about 80237.6168514494. The cubic root of 6438075158 is about 1860.3101149781.

The spelling of 6438075158 in words is "six billion, four hundred thirty-eight million, seventy-five thousand, one hundred fifty-eight".