4198540866191 has 8 divisors (see below), whose sum is σ = 4798349877024. Its totient is φ = 3598736220000.

The previous prime is 4198540866161. The next prime is 4198540866199. The reversal of 4198540866191 is 1916680458914.

4198540866191 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 cyclic number.

It is not a de Polignac number, because 4198540866191 - 2²² = 4198536671887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4198540866199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1327601 + ... + 3187413.

It is an arithmetic number, because the mean of its divisors is an integer number (599793734628).

Almost surely, 2^{4198540866191} is an apocalyptic number.

4198540866191 is a deficient number, since it is larger than the sum of its proper divisors (599809010833).

4198540866191 is a wasteful number, since it uses less digits than its factorization.

4198540866191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182321.

The product of its (nonzero) digits is 14929920, while the sum is 62.

The spelling of 4198540866191 in words is "four trillion, one hundred ninety-eight billion, five hundred forty million, eight hundred sixty-six thousand, one hundred ninety-one".