6438238158 has 16 divisors (see below), whose sum is σ = 14047065216. Its totient is φ = 1950981240.

The previous prime is 6438238153. The next prime is 6438238207. The reversal of 6438238158 is 8518328346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6438238153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48774466 + ... + 48774597.

It is an arithmetic number, because the mean of its divisors is an integer number (877941576).

Almost surely, 2^6438238158 is an apocalyptic number.

6438238158 is an abundant number, since it is smaller than the sum of its proper divisors (7608827058).

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

6438238158 is a wasteful number, since it uses less digits than its factorization.

6438238158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97549079.

The product of its digits is 1105920, while the sum is 48.

The square root of 6438238158 is about 80238.6325780792. The cubic root of 6438238158 is about 1860.3258147011.

The spelling of 6438238158 in words is "six billion, four hundred thirty-eight million, two hundred thirty-eight thousand, one hundred fifty-eight".