6918455139 has 8 divisors (see below), whose sum is σ = 9328254480. Its totient is φ = 4560479616.

The previous prime is 6918455111. The next prime is 6918455143. The reversal of 6918455139 is 9315548196.

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

It is not a de Polignac number, because 6918455139 - 2⁵ = 6918455107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6918455091 and 6918455100.

It is not an unprimeable number, because it can be changed into a prime (6918455179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12955642 + ... + 12956175.

It is an arithmetic number, because the mean of its divisors is an integer number (1166031810).

Almost surely, 2^6918455139 is an apocalyptic number.

6918455139 is a deficient number, since it is larger than the sum of its proper divisors (2409799341).

6918455139 is a wasteful number, since it uses less digits than its factorization.

6918455139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25911909.

The product of its digits is 1166400, while the sum is 51.

The square root of 6918455139 is about 83177.2513311182. The cubic root of 6918455139 is about 1905.4740694350.

The spelling of 6918455139 in words is "six billion, nine hundred eighteen million, four hundred fifty-five thousand, one hundred thirty-nine".