6870043809 has 32 divisors (see below), whose sum is σ = 10372252800. Its totient is φ = 4492946880.

The previous prime is 6870043801. The next prime is 6870043853. The reversal of 6870043809 is 9083400786.

It is a happy number.

It is not a de Polignac number, because 6870043809 - 2³ = 6870043801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6870043801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 635322 + ... + 646044.

It is an arithmetic number, because the mean of its divisors is an integer number (324132900).

Almost surely, 2^6870043809 is an apocalyptic number.

It is an amenable number.

6870043809 is a deficient number, since it is larger than the sum of its proper divisors (3502208991).

6870043809 is a wasteful number, since it uses less digits than its factorization.

6870043809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11182 (or 11176 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 6870043809 is about 82885.7274143142. The cubic root of 6870043809 is about 1901.0191954767.

The spelling of 6870043809 in words is "six billion, eight hundred seventy million, forty-three thousand, eight hundred nine".