6988365618 has 48 divisors (see below), whose sum is σ = 15224232576. Its totient is φ = 2125918080.

The previous prime is 6988365607. The next prime is 6988365641. The reversal of 6988365618 is 8165638896.

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 23 ways as a sum of consecutive naturals, for example, 612183 + ... + 623493.

It is an arithmetic number, because the mean of its divisors is an integer number (317171512).

Almost surely, 2^6988365618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6988365618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7612116288).

6988365618 is an abundant number, since it is smaller than the sum of its proper divisors (8235866958).

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

6988365618 is a wasteful number, since it uses less digits than its factorization.

6988365618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11507 (or 11418 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 60.

The square root of 6988365618 is about 83596.4450081461. The cubic root of 6988365618 is about 1911.8707964095.

The spelling of 6988365618 in words is "six billion, nine hundred eighty-eight million, three hundred sixty-five thousand, six hundred eighteen".