9681069281 has 16 divisors (see below), whose sum is σ = 10779931008. Its totient is φ = 8636880000.

The previous prime is 9681069253. The next prime is 9681069301. The reversal of 9681069281 is 1829601869.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 9681069281 - 2¹⁴ = 9681052897 is a prime.

It is a super-2 number, since 2×9681069281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9681069481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27845 + ... + 141906.

It is an arithmetic number, because the mean of its divisors is an integer number (673745688).

Almost surely, 2^9681069281 is an apocalyptic number.

It is an amenable number.

9681069281 is a deficient number, since it is larger than the sum of its proper divisors (1098861727).

9681069281 is a wasteful number, since it uses less digits than its factorization.

9681069281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169912.

The product of its (nonzero) digits is 373248, while the sum is 50.

The square root of 9681069281 is about 98392.4249167587. The cubic root of 9681069281 is about 2131.2829436622.

The spelling of 9681069281 in words is "nine billion, six hundred eighty-one million, sixty-nine thousand, two hundred eighty-one".