198766916393618 has 8 divisors (see below), whose sum is σ = 298928835099648. Its totient is φ = 99123971360404.

The previous prime is 198766916393609. The next prime is 198766916393641. The reversal of 198766916393618 is 816393619667891.

198766916393618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×198766916393618² (a number of 29 digits) contains 22 as substring.

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, 129743417246 + ... + 129743418777.

It is an arithmetic number, because the mean of its divisors is an integer number (37366104387456).

Almost surely, 2^{198766916393618} is an apocalyptic number.

198766916393618 is a deficient number, since it is larger than the sum of its proper divisors (100161918706030).

198766916393618 is a wasteful number, since it uses less digits than its factorization.

198766916393618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259486836408.

The product of its digits is 3809369088, while the sum is 83.

The spelling of 198766916393618 in words is "one hundred ninety-eight trillion, seven hundred sixty-six billion, nine hundred sixteen million, three hundred ninety-three thousand, six hundred eighteen".