6839495136 has 72 divisors (see below), whose sum is σ = 19463567760. Its totient is φ = 2278219776.

The previous prime is 6839495129. The next prime is 6839495137. The reversal of 6839495136 is 6315949386.

6839495136 is a `hidden beast` number, since 6 + 83 + 9 + 49 + 513 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6839495137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 441376 + ... + 456608.

It is an arithmetic number, because the mean of its divisors is an integer number (270327330).

Almost surely, 2^6839495136 is an apocalyptic number.

It is an amenable number.

6839495136 is an abundant number, since it is smaller than the sum of its proper divisors (12624072624).

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

6839495136 is a wasteful number, since it uses less digits than its factorization.

6839495136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16808 (or 16797 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The square root of 6839495136 is about 82701.2402325382. The cubic root of 6839495136 is about 1898.1972869941.

The spelling of 6839495136 in words is "six billion, eight hundred thirty-nine million, four hundred ninety-five thousand, one hundred thirty-six".