7987113169 has 8 divisors (see below), whose sum is σ = 9144120128. Its totient is φ = 6834103920.

The previous prime is 7987113149. The next prime is 7987113209. The reversal of 7987113169 is 9613117897.

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

It is not a de Polignac number, because 7987113169 - 2⁷ = 7987113041 is a prime.

It is a super-2 number, since 2×7987113169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7987113149) 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, 995142 + ... + 1003135.

It is an arithmetic number, because the mean of its divisors is an integer number (1143015016).

Almost surely, 2^7987113169 is an apocalyptic number.

It is an amenable number.

7987113169 is a deficient number, since it is larger than the sum of its proper divisors (1157006959).

7987113169 is a wasteful number, since it uses less digits than its factorization.

7987113169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998855.

The product of its digits is 571536, while the sum is 52.

The square root of 7987113169 is about 89370.6504899679. The cubic root of 7987113169 is about 1998.9255202667.

The spelling of 7987113169 in words is "seven billion, nine hundred eighty-seven million, one hundred thirteen thousand, one hundred sixty-nine".