6438951375 has 16 divisors (see below), whose sum is σ = 10714415712. Its totient is φ = 3434107200.

The previous prime is 6438951367. The next prime is 6438951391. The reversal of 6438951375 is 5731598346.

It is not a de Polignac number, because 6438951375 - 2³ = 6438951367 is a prime.

It is a super-2 number, since 2×6438951375² = 82920189619228781250, which contains 22 as substring.

It is a congruent 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, 8584894 + ... + 8585643.

It is an arithmetic number, because the mean of its divisors is an integer number (669650982).

Almost surely, 2^6438951375 is an apocalyptic number.

6438951375 is a deficient number, since it is larger than the sum of its proper divisors (4275464337).

6438951375 is a wasteful number, since it uses less digits than its factorization.

6438951375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17170555 (or 17170545 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The square root of 6438951375 is about 80243.0768041705. The cubic root of 6438951375 is about 1860.3945067341.

The spelling of 6438951375 in words is "six billion, four hundred thirty-eight million, nine hundred fifty-one thousand, three hundred seventy-five".