7968185971 has 4 divisors (see below), whose sum is σ = 8387564200. Its totient is φ = 7548807744.

The previous prime is 7968185969. The next prime is 7968185977. The reversal of 7968185971 is 1795818697.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7968185971 - 2¹ = 7968185969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7968185977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209689086 + ... + 209689123.

It is an arithmetic number, because the mean of its divisors is an integer number (2096891050).

Almost surely, 2^7968185971 is an apocalyptic number.

7968185971 is a deficient number, since it is larger than the sum of its proper divisors (419378229).

7968185971 is a wasteful number, since it uses less digits than its factorization.

7968185971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419378228.

The product of its digits is 7620480, while the sum is 61.

The square root of 7968185971 is about 89264.6961065796. The cubic root of 7968185971 is about 1997.3453087830.

The spelling of 7968185971 in words is "seven billion, nine hundred sixty-eight million, one hundred eighty-five thousand, nine hundred seventy-one".