6945171187 has 4 divisors (see below), whose sum is σ = 7106686840. Its totient is φ = 6783655536.

The previous prime is 6945171151. The next prime is 6945171197. The reversal of 6945171187 is 7811715496.

6945171187 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6945171187 - 2¹⁹ = 6944646899 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 6945171187.

It is not an unprimeable number, because it can be changed into a prime (6945171197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80757762 + ... + 80757847.

It is an arithmetic number, because the mean of its divisors is an integer number (1776671710).

Almost surely, 2^6945171187 is an apocalyptic number.

6945171187 is a deficient number, since it is larger than the sum of its proper divisors (161515653).

6945171187 is a wasteful number, since it uses less digits than its factorization.

6945171187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161515652.

The product of its digits is 423360, while the sum is 49.

The square root of 6945171187 is about 83337.6936745912. The cubic root of 6945171187 is about 1907.9236216051.

The spelling of 6945171187 in words is "six billion, nine hundred forty-five million, one hundred seventy-one thousand, one hundred eighty-seven".