1226434291 has 2 divisors, whose sum is σ = 1226434292. Its totient is φ = 1226434290.

The previous prime is 1226434289. The next prime is 1226434351. The reversal of 1226434291 is 1924346221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1226434291 - 2¹ = 1226434289 is a prime.

Together with 1226434289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1226434201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613217145 + 613217146.

It is an arithmetic number, because the mean of its divisors is an integer number (613217146).

Almost surely, 2^1226434291 is an apocalyptic number.

1226434291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226434291 is an equidigital number, since it uses as much as digits as its factorization.

1226434291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 1226434291 is about 35020.4838772967. The cubic root of 1226434291 is about 1070.4049158972.

The spelling of 1226434291 in words is "one billion, two hundred twenty-six million, four hundred thirty-four thousand, two hundred ninety-one".