7985003871 has 8 divisors (see below), whose sum is σ = 11465646640. Its totient is φ = 4913848512.

The previous prime is 7985003849. The next prime is 7985003879. The reversal of 7985003871 is 1783005897.

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

It is not a de Polignac number, because 7985003871 - 2¹³ = 7984995679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7985003871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7985003879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102371806 + ... + 102371883.

It is an arithmetic number, because the mean of its divisors is an integer number (1433205830).

Almost surely, 2^7985003871 is an apocalyptic number.

7985003871 is a deficient number, since it is larger than the sum of its proper divisors (3480642769).

7985003871 is a wasteful number, since it uses less digits than its factorization.

7985003871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204743705.

The product of its (nonzero) digits is 423360, while the sum is 48.

The square root of 7985003871 is about 89358.8488679213. The cubic root of 7985003871 is about 1998.7495409223.

The spelling of 7985003871 in words is "seven billion, nine hundred eighty-five million, three thousand, eight hundred seventy-one".