6509438334 has 48 divisors (see below), whose sum is σ = 16819425792. Its totient is φ = 1778976144.

The previous prime is 6509438333. The next prime is 6509438359. The reversal of 6509438334 is 4338349056.

It is a self number, because there is not a number n which added to its sum of digits gives 6509438334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6509438333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1120194 + ... + 1125989.

It is an arithmetic number, because the mean of its divisors is an integer number (350404704).

Almost surely, 2^6509438334 is an apocalyptic number.

6509438334 is an abundant number, since it is smaller than the sum of its proper divisors (10309987458).

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

6509438334 is a wasteful number, since it uses less digits than its factorization.

6509438334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246221 (or 2246218 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The square root of 6509438334 is about 80681.0903124146. The cubic root of 6509438334 is about 1867.1584412140.

The spelling of 6509438334 in words is "six billion, five hundred nine million, four hundred thirty-eight thousand, three hundred thirty-four".