9930686718 has 32 divisors (see below), whose sum is σ = 20911363200. Its totient is φ = 3135308256.

The previous prime is 9930686683. The next prime is 9930686741. The reversal of 9930686718 is 8176860399.

It is a super-2 number, since 2×9930686718² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799705 + ... + 812027.

It is an arithmetic number, because the mean of its divisors is an integer number (653480100).

Almost surely, 2^9930686718 is an apocalyptic number.

9930686718 is an abundant number, since it is smaller than the sum of its proper divisors (10980676482).

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

9930686718 is a wasteful number, since it uses less digits than its factorization.

9930686718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19416.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The square root of 9930686718 is about 99652.8309582824. The cubic root of 9930686718 is about 2149.4454468799.

The spelling of 9930686718 in words is "nine billion, nine hundred thirty million, six hundred eighty-six thousand, seven hundred eighteen".