6988886918 has 16 divisors (see below), whose sum is σ = 11370967440. Its totient is φ = 3202432416.

The previous prime is 6988886911. The next prime is 6988886951. The reversal of 6988886918 is 8196888896.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6988886911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 963305 + ... + 970532.

It is an arithmetic number, because the mean of its divisors is an integer number (710685465).

Almost surely, 2^6988886918 is an apocalyptic number.

6988886918 is a deficient number, since it is larger than the sum of its proper divisors (4382080522).

6988886918 is a wasteful number, since it uses less digits than its factorization.

6988886918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933991.

The product of its digits is 95551488, while the sum is 71.

The square root of 6988886918 is about 83599.5629055559. The cubic root of 6988886918 is about 1911.9183341563.

The spelling of 6988886918 in words is "six billion, nine hundred eighty-eight million, eight hundred eighty-six thousand, nine hundred eighteen".