1226342197 has 2 divisors, whose sum is σ = 1226342198. Its totient is φ = 1226342196.

The previous prime is 1226342179. The next prime is 1226342207. The reversal of 1226342197 is 7912436221.

Together with previous prime (1226342179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1222621156 + 3721041 = 34966^2 + 1929^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226342197 - 2²³ = 1217953589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226348197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613171098 + 613171099.

It is an arithmetic number, because the mean of its divisors is an integer number (613171099).

Almost surely, 2^1226342197 is an apocalyptic number.

It is an amenable number.

1226342197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226342197 is an equidigital number, since it uses as much as digits as its factorization.

1226342197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 1226342197 is about 35019.1689935669. The cubic root of 1226342197 is about 1070.3781226863.

The spelling of 1226342197 in words is "one billion, two hundred twenty-six million, three hundred forty-two thousand, one hundred ninety-seven".