6438036375 has 48 divisors (see below), whose sum is σ = 12110275008. Its totient is φ = 3284318400.

The previous prime is 6438036313. The next prime is 6438036377. The reversal of 6438036375 is 5736308346.

6438036375 is a `hidden beast` number, since 6 + 4 + 3 + 8 + 0 + 3 + 637 + 5 = 666.

6438036375 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6438036375 - 2²³ = 6429647767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6438036375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6438036377) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 98532 + ... + 150281.

It is an arithmetic number, because the mean of its divisors is an integer number (252297396).

Almost surely, 2^6438036375 is an apocalyptic number.

6438036375 is a deficient number, since it is larger than the sum of its proper divisors (5672238633).

6438036375 is a wasteful number, since it uses less digits than its factorization.

6438036375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248857 (or 248844 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The square root of 6438036375 is about 80237.3751751638. The cubic root of 6438036375 is about 1860.3063794645.

The spelling of 6438036375 in words is "six billion, four hundred thirty-eight million, thirty-six thousand, three hundred seventy-five".