6918378178 has 16 divisors (see below), whose sum is σ = 10695735360. Its totient is φ = 3353794416.

The previous prime is 6918378163. The next prime is 6918378197. The reversal of 6918378178 is 8718738196.

It is a super-2 number, since 2×6918378178² = 95727913227653199368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144238 + ... + 186121.

It is an arithmetic number, because the mean of its divisors is an integer number (668483460).

Almost surely, 2^6918378178 is an apocalyptic number.

6918378178 is a deficient number, since it is larger than the sum of its proper divisors (3777357182).

6918378178 is a wasteful number, since it uses less digits than its factorization.

6918378178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330681.

The product of its digits is 4064256, while the sum is 58.

The square root of 6918378178 is about 83176.7886973283. The cubic root of 6918378178 is about 1905.4670039013.

The spelling of 6918378178 in words is "six billion, nine hundred eighteen million, three hundred seventy-eight thousand, one hundred seventy-eight".