194071620439 has 2 divisors, whose sum is σ = 194071620440. Its totient is φ = 194071620438.

The previous prime is 194071620419. The next prime is 194071620451. The reversal of 194071620439 is 934026170491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194071620439 - 2⁷ = 194071620311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194071620419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97035810219 + 97035810220.

It is an arithmetic number, because the mean of its divisors is an integer number (97035810220).

Almost surely, 2^194071620439 is an apocalyptic number.

194071620439 is a deficient number, since it is larger than the sum of its proper divisors (1).

194071620439 is an equidigital number, since it uses as much as digits as its factorization.

194071620439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 194071620439 in words is "one hundred ninety-four billion, seventy-one million, six hundred twenty thousand, four hundred thirty-nine".