1306422193 has 2 divisors, whose sum is σ = 1306422194. Its totient is φ = 1306422192.

The previous prime is 1306422179. The next prime is 1306422217. The reversal of 1306422193 is 3912246031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 988976704 + 317445489 = 31448^2 + 17817^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306422193 - 2⁹ = 1306421681 is a prime.

It is not a weakly prime, because it can be changed into another prime (1306422163) 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, 653211096 + 653211097.

It is an arithmetic number, because the mean of its divisors is an integer number (653211097).

Almost surely, 2^1306422193 is an apocalyptic number.

It is an amenable number.

1306422193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306422193 is an equidigital number, since it uses as much as digits as its factorization.

1306422193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1306422193 is about 36144.4628262753. The cubic root of 1306422193 is about 1093.1871459458.

The spelling of 1306422193 in words is "one billion, three hundred six million, four hundred twenty-two thousand, one hundred ninety-three".