6488216818 has 4 divisors (see below), whose sum is σ = 9732325230. Its totient is φ = 3244108408.

The previous prime is 6488216789. The next prime is 6488216851. The reversal of 6488216818 is 8186128846.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5558149809 + 930067009 = 74553^2 + 30497^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1622054203 + ... + 1622054206.

Almost surely, 2^6488216818 is an apocalyptic number.

6488216818 is a deficient number, since it is larger than the sum of its proper divisors (3244108412).

6488216818 is a wasteful number, since it uses less digits than its factorization.

6488216818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244108411.

The product of its digits is 1179648, while the sum is 52.

The square root of 6488216818 is about 80549.4681422540. The cubic root of 6488216818 is about 1865.1271819676.

The spelling of 6488216818 in words is "six billion, four hundred eighty-eight million, two hundred sixteen thousand, eight hundred eighteen".