193906840319 has 2 divisors, whose sum is σ = 193906840320. Its totient is φ = 193906840318.

The previous prime is 193906840279. The next prime is 193906840331. The reversal of 193906840319 is 913048609391.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 193906840319 - 2²⁰ = 193905791743 is a prime.

It is a super-2 number, since 2×193906840319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193906840339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96953420159 + 96953420160.

It is an arithmetic number, because the mean of its divisors is an integer number (96953420160).

Almost surely, 2^193906840319 is an apocalyptic number.

193906840319 is a deficient number, since it is larger than the sum of its proper divisors (1).

193906840319 is an equidigital number, since it uses as much as digits as its factorization.

193906840319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The spelling of 193906840319 in words is "one hundred ninety-three billion, nine hundred six million, eight hundred forty thousand, three hundred nineteen".