6986459218 has 4 divisors (see below), whose sum is σ = 10479688830. Its totient is φ = 3493229608.

The previous prime is 6986459209. The next prime is 6986459257. The reversal of 6986459218 is 8129546896.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4934641009 + 2051818209 = 70247^2 + 45297^2 .

It is a super-2 number, since 2×6986459218² = 97621224809554343048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1746614803 + ... + 1746614806.

Almost surely, 2^6986459218 is an apocalyptic number.

6986459218 is a deficient number, since it is larger than the sum of its proper divisors (3493229612).

6986459218 is a wasteful number, since it uses less digits than its factorization.

6986459218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3493229611.

The product of its digits is 7464960, while the sum is 58.

The square root of 6986459218 is about 83585.0418316579. The cubic root of 6986459218 is about 1911.6969301980.

The spelling of 6986459218 in words is "six billion, nine hundred eighty-six million, four hundred fifty-nine thousand, two hundred eighteen".