7668196818 has 8 divisors (see below), whose sum is σ = 15336393648. Its totient is φ = 2556065604.

The previous prime is 7668196807. The next prime is 7668196819. The reversal of 7668196818 is 8186918667.

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

7668196818 is an admirable number.

It is a super-4 number, since 4×7668196818⁴ (a number of 41 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (7668196819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639016396 + ... + 639016407.

It is an arithmetic number, because the mean of its divisors is an integer number (1917049206).

Almost surely, 2^7668196818 is an apocalyptic number.

7668196818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7668196818 is a wasteful number, since it uses less digits than its factorization.

7668196818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278032808.

The product of its digits is 6967296, while the sum is 60.

The square root of 7668196818 is about 87568.2409210097. The cubic root of 7668196818 is about 1971.9584068581.

The spelling of 7668196818 in words is "seven billion, six hundred sixty-eight million, one hundred ninety-six thousand, eight hundred eighteen".