1226068643 has 2 divisors, whose sum is σ = 1226068644. Its totient is φ = 1226068642.

The previous prime is 1226068621. The next prime is 1226068681. The reversal of 1226068643 is 3468606221.

It is an a-pointer prime, because the next prime (1226068681) can be obtained adding 1226068643 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1226068643 - 2²⁰ = 1225020067 is a prime.

It is a super-2 number, since 2×1226068643² = 3006488634695722898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1226068597 and 1226068606.

It is not a weakly prime, because it can be changed into another prime (1226068603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613034321 + 613034322.

It is an arithmetic number, because the mean of its divisors is an integer number (613034322).

Almost surely, 2^1226068643 is an apocalyptic number.

1226068643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226068643 is an equidigital number, since it uses as much as digits as its factorization.

1226068643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 1226068643 is about 35015.2630005830. The cubic root of 1226068643 is about 1070.2985288089.

The spelling of 1226068643 in words is "one billion, two hundred twenty-six million, sixty-eight thousand, six hundred forty-three".