18664476628198 has 8 divisors (see below), whose sum is σ = 29643580527192. Its totient is φ = 8783283119136.

The previous prime is 18664476628169. The next prime is 18664476628207. The reversal of 18664476628198 is 89182667446681.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274477597440 + ... + 274477597507.

It is an arithmetic number, because the mean of its divisors is an integer number (3705447565899).

Almost surely, 2^{18664476628198} is an apocalyptic number.

18664476628198 is a deficient number, since it is larger than the sum of its proper divisors (10979103898994).

18664476628198 is a wasteful number, since it uses less digits than its factorization.

18664476628198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548955194966.

The product of its digits is 1337720832, while the sum is 76.

The spelling of 18664476628198 in words is "eighteen trillion, six hundred sixty-four billion, four hundred seventy-six million, six hundred twenty-eight thousand, one hundred ninety-eight".