6918034578 has 64 divisors (see below), whose sum is σ = 17043882240. Its totient is φ = 1822943232.

The previous prime is 6918034537. The next prime is 6918034579. The reversal of 6918034578 is 8754308196.

It is a self number, because there is not a number n which added to its sum of digits gives 6918034578.

It is not an unprimeable number, because it can be changed into a prime (6918034579) 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, 703278 + ... + 713046.

It is an arithmetic number, because the mean of its divisors is an integer number (266310660).

Almost surely, 2^6918034578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6918034578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8521941120).

6918034578 is an abundant number, since it is smaller than the sum of its proper divisors (10125847662).

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

6918034578 is a wasteful number, since it uses less digits than its factorization.

6918034578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11091.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The square root of 6918034578 is about 83174.7231916043. The cubic root of 6918034578 is about 1905.4354584878.

The spelling of 6918034578 in words is "six billion, nine hundred eighteen million, thirty-four thousand, five hundred seventy-eight".