9745684988 has 24 divisors (see below), whose sum is σ = 18379365312. Its totient is φ = 4494947904.

The previous prime is 9745684981. The next prime is 9745685009. The reversal of 9745684988 is 8894865479.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9745684981) 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, 14306 + ... + 140342.

It is an arithmetic number, because the mean of its divisors is an integer number (765806888).

Almost surely, 2^9745684988 is an apocalyptic number.

It is an amenable number.

9745684988 is a deficient number, since it is larger than the sum of its proper divisors (8633680324).

9745684988 is a wasteful number, since it uses less digits than its factorization.

9745684988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127541 (or 127539 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 68.

The square root of 9745684988 is about 98720.2359600097. The cubic root of 9745684988 is about 2136.0141392430.

The spelling of 9745684988 in words is "nine billion, seven hundred forty-five million, six hundred eighty-four thousand, nine hundred eighty-eight".