7991673983 has 2 divisors, whose sum is σ = 7991673984. Its totient is φ = 7991673982.

The previous prime is 7991673979. The next prime is 7991674013. The reversal of 7991673983 is 3893761997.

It is a weak prime.

It is an emirp because it is prime and its reverse (3893761997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7991673983 - 2² = 7991673979 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7991673083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3995836991 + 3995836992.

It is an arithmetic number, because the mean of its divisors is an integer number (3995836992).

Almost surely, 2^7991673983 is an apocalyptic number.

7991673983 is a deficient number, since it is larger than the sum of its proper divisors (1).

7991673983 is an equidigital number, since it uses as much as digits as its factorization.

7991673983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15431472, while the sum is 62.

The square root of 7991673983 is about 89396.1631335484. The cubic root of 7991673983 is about 1999.3059244074.

The spelling of 7991673983 in words is "seven billion, nine hundred ninety-one million, six hundred seventy-three thousand, nine hundred eighty-three".