7985644833 has 4 divisors (see below), whose sum is σ = 10647526448. Its totient is φ = 5323763220.

The previous prime is 7985644829. The next prime is 7985644847. The reversal of 7985644833 is 3384465897.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7985644833 - 2² = 7985644829 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7985644813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1330940803 + ... + 1330940808.

It is an arithmetic number, because the mean of its divisors is an integer number (2661881612).

Almost surely, 2^7985644833 is an apocalyptic number.

It is an amenable number.

7985644833 is a deficient number, since it is larger than the sum of its proper divisors (2661881615).

7985644833 is a wasteful number, since it uses less digits than its factorization.

7985644833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661881614.

The product of its digits is 17418240, while the sum is 57.

The square root of 7985644833 is about 89362.4352454654. The cubic root of 7985644833 is about 1998.8030198455.

The spelling of 7985644833 in words is "seven billion, nine hundred eighty-five million, six hundred forty-four thousand, eight hundred thirty-three".