7987871371 has 8 divisors (see below), whose sum is σ = 8316842688. Its totient is φ = 7665288000.

The previous prime is 7987871317. The next prime is 7987871383. The reversal of 7987871371 is 1731787897.

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

It is a cyclic number.

It is not a de Polignac number, because 7987871371 - 2²¹ = 7985774219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7987871471) 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 7 ways as a sum of consecutive naturals, for example, 1594435 + ... + 1599436.

It is an arithmetic number, because the mean of its divisors is an integer number (1039605336).

Almost surely, 2^7987871371 is an apocalyptic number.

7987871371 is a deficient number, since it is larger than the sum of its proper divisors (328971317).

7987871371 is a wasteful number, since it uses less digits than its factorization.

7987871371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193973.

The product of its digits is 4148928, while the sum is 58.

The square root of 7987871371 is about 89374.8922852498. The cubic root of 7987871371 is about 1998.9887697095.

The spelling of 7987871371 in words is "seven billion, nine hundred eighty-seven million, eight hundred seventy-one thousand, three hundred seventy-one".