1228280663 has 2 divisors, whose sum is σ = 1228280664. Its totient is φ = 1228280662.

The previous prime is 1228280629. The next prime is 1228280737. The reversal of 1228280663 is 3660828221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1228280663 - 2²⁸ = 959845207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228280623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614140331 + 614140332.

It is an arithmetic number, because the mean of its divisors is an integer number (614140332).

Almost surely, 2^1228280663 is an apocalyptic number.

1228280663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228280663 is an equidigital number, since it uses as much as digits as its factorization.

1228280663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 1228280663 is about 35046.8352779534. The cubic root of 1228280663 is about 1070.9418042071.

The spelling of 1228280663 in words is "one billion, two hundred twenty-eight million, two hundred eighty thousand, six hundred sixty-three".