1228914823 has 2 divisors, whose sum is σ = 1228914824. Its totient is φ = 1228914822.

The previous prime is 1228914821. The next prime is 1228914847. The reversal of 1228914823 is 3284198221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1228914823 - 2¹ = 1228914821 is a prime.

Together with 1228914821, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228914821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614457411 + 614457412.

It is an arithmetic number, because the mean of its divisors is an integer number (614457412).

Almost surely, 2^1228914823 is an apocalyptic number.

1228914823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228914823 is an equidigital number, since it uses as much as digits as its factorization.

1228914823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 40.

The square root of 1228914823 is about 35055.8814323645. The cubic root of 1228914823 is about 1071.1260812016.

The spelling of 1228914823 in words is "one billion, two hundred twenty-eight million, nine hundred fourteen thousand, eight hundred twenty-three".