193980163439 has 2 divisors, whose sum is σ = 193980163440. Its totient is φ = 193980163438.

The previous prime is 193980163423. The next prime is 193980163441. The reversal of 193980163439 is 934361089391.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 193980163439 - 2⁴ = 193980163423 is a prime.

It is a Sophie Germain prime.

Together with 193980163441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193980163469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96990081719 + 96990081720.

It is an arithmetic number, because the mean of its divisors is an integer number (96990081720).

Almost surely, 2^193980163439 is an apocalyptic number.

193980163439 is a deficient number, since it is larger than the sum of its proper divisors (1).

193980163439 is an equidigital number, since it uses as much as digits as its factorization.

193980163439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3779136, while the sum is 56.

The spelling of 193980163439 in words is "one hundred ninety-three billion, nine hundred eighty million, one hundred sixty-three thousand, four hundred thirty-nine".