6979155418 has 8 divisors (see below), whose sum is σ = 11084541012. Its totient is φ = 3284308416.

The previous prime is 6979155413. The next prime is 6979155427. The reversal of 6979155418 is 8145519796.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6649260849 + 329894569 = 81543^2 + 18163^2 .

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

It is a super-2 number, since 2×6979155418² = 97417220697197509448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6979155413) 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, 102634605 + ... + 102634672.

Almost surely, 2^6979155418 is an apocalyptic number.

6979155418 is a deficient number, since it is larger than the sum of its proper divisors (4105385594).

6979155418 is a wasteful number, since it uses less digits than its factorization.

6979155418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205269296.

The product of its digits is 2721600, while the sum is 55.

The square root of 6979155418 is about 83541.3395750870. The cubic root of 6979155418 is about 1911.0305210746.

The spelling of 6979155418 in words is "six billion, nine hundred seventy-nine million, one hundred fifty-five thousand, four hundred eighteen".