6506478188 has 24 divisors (see below), whose sum is σ = 13578738432. Its totient is φ = 2667251664.

The previous prime is 6506478163. The next prime is 6506478203. The reversal of 6506478188 is 8818746056.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5050970 + ... + 5052257.

It is an arithmetic number, because the mean of its divisors is an integer number (565780768).

Almost surely, 2^6506478188 is an apocalyptic number.

It is an amenable number.

6506478188 is an abundant number, since it is smaller than the sum of its proper divisors (7072260244).

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

6506478188 is a wasteful number, since it uses less digits than its factorization.

6506478188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10103261 (or 10103259 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 53.

The square root of 6506478188 is about 80662.7434941312. The cubic root of 6506478188 is about 1866.8753702165.

The spelling of 6506478188 in words is "six billion, five hundred six million, four hundred seventy-eight thousand, one hundred eighty-eight".