194189414543 has 2 divisors, whose sum is σ = 194189414544. Its totient is φ = 194189414542.

The previous prime is 194189414473. The next prime is 194189414581. The reversal of 194189414543 is 345414981491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194189414543 - 2¹⁴ = 194189398159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194189410543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97094707271 + 97094707272.

It is an arithmetic number, because the mean of its divisors is an integer number (97094707272).

Almost surely, 2^194189414543 is an apocalyptic number.

194189414543 is a deficient number, since it is larger than the sum of its proper divisors (1).

194189414543 is an equidigital number, since it uses as much as digits as its factorization.

194189414543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 53.

The spelling of 194189414543 in words is "one hundred ninety-four billion, one hundred eighty-nine million, four hundred fourteen thousand, five hundred forty-three".