6981354218 has 8 divisors (see below), whose sum is σ = 10524655200. Its totient is φ = 3473135820.

The previous prime is 6981354217. The next prime is 6981354229. The reversal of 6981354218 is 8124531896.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6981354217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8770148 + ... + 8770943.

It is an arithmetic number, because the mean of its divisors is an integer number (1315581900).

Almost surely, 2^6981354218 is an apocalyptic number.

6981354218 is a deficient number, since it is larger than the sum of its proper divisors (3543300982).

6981354218 is a wasteful number, since it uses less digits than its factorization.

6981354218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17541292.

The product of its digits is 414720, while the sum is 47.

The square root of 6981354218 is about 83554.4984905062. The cubic root of 6981354218 is about 1911.2311916168.

The spelling of 6981354218 in words is "six billion, nine hundred eighty-one million, three hundred fifty-four thousand, two hundred eighteen".