194143032197 has 2 divisors, whose sum is σ = 194143032198. Its totient is φ = 194143032196.

The previous prime is 194143032179. The next prime is 194143032217. The reversal of 194143032197 is 791230341491.

Together with previous prime (194143032179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189968709316 + 4174322881 = 435854^2 + 64609^2 .

It is a cyclic number.

It is not a de Polignac number, because 194143032197 - 2¹⁴ = 194143015813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194143037197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97071516098 + 97071516099.

It is an arithmetic number, because the mean of its divisors is an integer number (97071516099).

Almost surely, 2^194143032197 is an apocalyptic number.

It is an amenable number.

194143032197 is a deficient number, since it is larger than the sum of its proper divisors (1).

194143032197 is an equidigital number, since it uses as much as digits as its factorization.

194143032197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 194143032197 in words is "one hundred ninety-four billion, one hundred forty-three million, thirty-two thousand, one hundred ninety-seven".