6506885188 has 6 divisors (see below), whose sum is σ = 11387049086. Its totient is φ = 3253442592.

The previous prime is 6506885137. The next prime is 6506885233. The reversal of 6506885188 is 8815886056.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4579499584 + 1927385604 = 67672^2 + 43902^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813360645 + ... + 813360652.

Almost surely, 2^6506885188 is an apocalyptic number.

It is an amenable number.

6506885188 is a deficient number, since it is larger than the sum of its proper divisors (4880163898).

6506885188 is a wasteful number, since it uses less digits than its factorization.

6506885188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626721301 (or 1626721299 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 55.

The square root of 6506885188 is about 80665.2663046494. The cubic root of 6506885188 is about 1866.9142956491.

The spelling of 6506885188 in words is "six billion, five hundred six million, eight hundred eighty-five thousand, one hundred eighty-eight".