6786809538 has 16 divisors (see below), whose sum is σ = 14288020320. Its totient is φ = 2143202976.

The previous prime is 6786809531. The next prime is 6786809539. The reversal of 6786809538 is 8359086876.

It is not an unprimeable number, because it can be changed into a prime (6786809531) 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, 29766595 + ... + 29766822.

It is an arithmetic number, because the mean of its divisors is an integer number (893001270).

Almost surely, 2^6786809538 is an apocalyptic number.

6786809538 is an abundant number, since it is smaller than the sum of its proper divisors (7501210782).

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

6786809538 is a wasteful number, since it uses less digits than its factorization.

6786809538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59533441.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The square root of 6786809538 is about 82382.0947657924. The cubic root of 6786809538 is about 1893.3106906952.

The spelling of 6786809538 in words is "six billion, seven hundred eighty-six million, eight hundred nine thousand, five hundred thirty-eight".