7888871916 has 18 divisors (see below), whose sum is σ = 19941315212. Its totient is φ = 2629623960.

The previous prime is 7888871897. The next prime is 7888871917. The reversal of 7888871916 is 6191788887.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×7888871916² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7888871917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109567630 + ... + 109567701.

Almost surely, 2^7888871916 is an apocalyptic number.

It is an amenable number.

7888871916 is an abundant number, since it is smaller than the sum of its proper divisors (12052443296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7888871916 is a wasteful number, since it uses less digits than its factorization.

7888871916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219135341 (or 219135336 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 63.

The square root of 7888871916 is about 88819.3217492680. The cubic root of 7888871916 is about 1990.6961122839.

The spelling of 7888871916 in words is "seven billion, eight hundred eighty-eight million, eight hundred seventy-one thousand, nine hundred sixteen".