6918856718 has 4 divisors (see below), whose sum is σ = 10378285080. Its totient is φ = 3459428358.

The previous prime is 6918856717. The next prime is 6918856727. The reversal of 6918856718 is 8176588196.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6918856717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1729714178 + ... + 1729714181.

It is an arithmetic number, because the mean of its divisors is an integer number (2594571270).

Almost surely, 2^6918856718 is an apocalyptic number.

6918856718 is a deficient number, since it is larger than the sum of its proper divisors (3459428362).

6918856718 is a wasteful number, since it uses less digits than its factorization.

6918856718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3459428361.

The product of its digits is 5806080, while the sum is 59.

The square root of 6918856718 is about 83179.6652914641. The cubic root of 6918856718 is about 1905.5109362186.

The spelling of 6918856718 in words is "six billion, nine hundred eighteen million, eight hundred fifty-six thousand, seven hundred eighteen".