6918219371 has 16 divisors (see below), whose sum is σ = 8333990400. Its totient is φ = 5610161088.

The previous prime is 6918219361. The next prime is 6918219391. The reversal of 6918219371 is 1739128196.

It is not a de Polignac number, because 6918219371 - 2³⁰ = 5844477547 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6918219361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63815 + ... + 133823.

It is an arithmetic number, because the mean of its divisors is an integer number (520874400).

Almost surely, 2^6918219371 is an apocalyptic number.

6918219371 is a deficient number, since it is larger than the sum of its proper divisors (1415771029).

6918219371 is a wasteful number, since it uses less digits than its factorization.

6918219371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70778.

The product of its digits is 163296, while the sum is 47.

The square root of 6918219371 is about 83175.8340565335. The cubic root of 6918219371 is about 1905.4524241927.

The spelling of 6918219371 in words is "six billion, nine hundred eighteen million, two hundred nineteen thousand, three hundred seventy-one".