4193938958191 has 2 divisors, whose sum is σ = 4193938958192. Its totient is φ = 4193938958190.

The previous prime is 4193938958147. The next prime is 4193938958207. The reversal of 4193938958191 is 1918598393914.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4193938958191 - 2¹¹ = 4193938956143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4193938958191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4193938958291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2096969479095 + 2096969479096.

It is an arithmetic number, because the mean of its divisors is an integer number (2096969479096).

Almost surely, 2^{4193938958191} is an apocalyptic number.

4193938958191 is a deficient number, since it is larger than the sum of its proper divisors (1).

4193938958191 is an equidigital number, since it uses as much as digits as its factorization.

4193938958191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75582720, while the sum is 70.

The spelling of 4193938958191 in words is "four trillion, one hundred ninety-three billion, nine hundred thirty-eight million, nine hundred fifty-eight thousand, one hundred ninety-one".