7989646133 has 8 divisors (see below), whose sum is σ = 9171250752. Its totient is φ = 6818098176.

The previous prime is 7989646103. The next prime is 7989646139. The reversal of 7989646133 is 3316469897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7989646133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7989646139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2512460 + ... + 2515637.

It is an arithmetic number, because the mean of its divisors is an integer number (1146406344).

Almost surely, 2^7989646133 is an apocalyptic number.

It is an amenable number.

7989646133 is a deficient number, since it is larger than the sum of its proper divisors (1181604619).

7989646133 is a wasteful number, since it uses less digits than its factorization.

7989646133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028331.

The product of its digits is 5878656, while the sum is 56.

The square root of 7989646133 is about 89384.8204842411. The cubic root of 7989646133 is about 1999.1368052510.

The spelling of 7989646133 in words is "seven billion, nine hundred eighty-nine million, six hundred forty-six thousand, one hundred thirty-three".