7919418666 has 8 divisors (see below), whose sum is σ = 15838837344. Its totient is φ = 2639806220.

The previous prime is 7919418659. The next prime is 7919418667. The reversal of 7919418666 is 6668149197.

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

7919418666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (7919418667) 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, 659951550 + ... + 659951561.

It is an arithmetic number, because the mean of its divisors is an integer number (1979854668).

Almost surely, 2^7919418666 is an apocalyptic number.

7919418666 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.

7919418666 is a wasteful number, since it uses less digits than its factorization.

7919418666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319903116.

The product of its digits is 3919104, while the sum is 57.

The square root of 7919418666 is about 88991.1156576880. The cubic root of 7919418666 is about 1993.2622154530.

The spelling of 7919418666 in words is "seven billion, nine hundred nineteen million, four hundred eighteen thousand, six hundred sixty-six".