9681033861 has 6 divisors (see below), whose sum is σ = 13983715590. Its totient is φ = 6454022568.

The previous prime is 9681033841. The next prime is 9681033893. The reversal of 9681033861 is 1683301869.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9679608225 + 1425636 = 98385^2 + 1194^2 .

It is not a de Polignac number, because 9681033861 - 2⁶ = 9681033797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9681033811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 537835206 + ... + 537835223.

It is an arithmetic number, because the mean of its divisors is an integer number (2330619265).

Almost surely, 2^9681033861 is an apocalyptic number.

It is an amenable number.

9681033861 is a deficient number, since it is larger than the sum of its proper divisors (4302681729).

9681033861 is a wasteful number, since it uses less digits than its factorization.

9681033861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075670435 (or 1075670432 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 9681033861 is about 98392.2449230629. The cubic root of 9681033861 is about 2131.2803444268.

The spelling of 9681033861 in words is "nine billion, six hundred eighty-one million, thirty-three thousand, eight hundred sixty-one".