9686991900 has 36 divisors (see below), whose sum is σ = 28027697432. Its totient is φ = 2583197760.

The previous prime is 9686991859. The next prime is 9686991907. The reversal of 9686991900 is 91996869.

It is a super-2 number, since 2×9686991900² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9686991907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16144687 + ... + 16145286.

Almost surely, 2^9686991900 is an apocalyptic number.

It is an amenable number.

9686991900 is an abundant number, since it is smaller than the sum of its proper divisors (18340705532).

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

9686991900 is a wasteful number, since it uses less digits than its factorization.

9686991900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32289990 (or 32289983 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 57.

The square root of 9686991900 is about 98422.5172407209. The cubic root of 9686991900 is about 2131.7174756777.

The spelling of 9686991900 in words is "nine billion, six hundred eighty-six million, nine hundred ninety-one thousand, nine hundred".