193620421349 has 2 divisors, whose sum is σ = 193620421350. Its totient is φ = 193620421348.

The previous prime is 193620421261. The next prime is 193620421361. The reversal of 193620421349 is 943124026391.

193620421349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184844104225 + 8776317124 = 429935^2 + 93682^2 .

It is a cyclic number.

It is not a de Polignac number, because 193620421349 - 2¹⁶ = 193620355813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193620427349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96810210674 + 96810210675.

It is an arithmetic number, because the mean of its divisors is an integer number (96810210675).

Almost surely, 2^193620421349 is an apocalyptic number.

It is an amenable number.

193620421349 is a deficient number, since it is larger than the sum of its proper divisors (1).

193620421349 is an equidigital number, since it uses as much as digits as its factorization.

193620421349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 193620421349 in words is "one hundred ninety-three billion, six hundred twenty million, four hundred twenty-one thousand, three hundred forty-nine".