1228824629 has 2 divisors, whose sum is σ = 1228824630. Its totient is φ = 1228824628.

The previous prime is 1228824613. The next prime is 1228824673. The reversal of 1228824629 is 9264288221.

It is an a-pointer prime, because the next prime (1228824673) can be obtained adding 1228824629 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 745836100 + 482988529 = 27310^2 + 21977^2 .

It is an emirp because it is prime and its reverse (9264288221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1228824629 - 2⁴ = 1228824613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1228824629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228824679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614412314 + 614412315.

It is an arithmetic number, because the mean of its divisors is an integer number (614412315).

Almost surely, 2^1228824629 is an apocalyptic number.

It is an amenable number.

1228824629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228824629 is an equidigital number, since it uses as much as digits as its factorization.

1228824629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 44.

The square root of 1228824629 is about 35054.5949769784. The cubic root of 1228824629 is about 1071.0998761011.

The spelling of 1228824629 in words is "one billion, two hundred twenty-eight million, eight hundred twenty-four thousand, six hundred twenty-nine".