1226346643 has 4 divisors (see below), whose sum is σ = 1226418880. Its totient is φ = 1226274408.

The previous prime is 1226346619. The next prime is 1226346677. The reversal of 1226346643 is 3466436221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1226346643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226344643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4798 + ... + 49756.

It is an arithmetic number, because the mean of its divisors is an integer number (306604720).

Almost surely, 2^1226346643 is an apocalyptic number.

1226346643 is a deficient number, since it is larger than the sum of its proper divisors (72237).

1226346643 is an equidigital number, since it uses as much as digits as its factorization.

1226346643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72236.

The product of its digits is 124416, while the sum is 37.

The square root of 1226346643 is about 35019.2324730283. The cubic root of 1226346643 is about 1070.3794162065.

The spelling of 1226346643 in words is "one billion, two hundred twenty-six million, three hundred forty-six thousand, six hundred forty-three".