6218966988 has 144 divisors (see below), whose sum is σ = 17964011520. Its totient is φ = 1798215552.

The previous prime is 6218966981. The next prime is 6218966989. The reversal of 6218966988 is 8896698126.

It is not an unprimeable number, because it can be changed into a prime (6218966981) 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, 1126531 + ... + 1132037.

It is an arithmetic number, because the mean of its divisors is an integer number (124750080).

Almost surely, 2^6218966988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6218966988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8982005760).

6218966988 is an abundant number, since it is smaller than the sum of its proper divisors (11745044532).

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

6218966988 is a wasteful number, since it uses less digits than its factorization.

6218966988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5676 (or 5671 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 63.

The square root of 6218966988 is about 78860.4272623475. The cubic root of 6218966988 is about 1838.9619802892.

The spelling of 6218966988 in words is "six billion, two hundred eighteen million, nine hundred sixty-six thousand, nine hundred eighty-eight".