1228966457 has 2 divisors, whose sum is σ = 1228966458. Its totient is φ = 1228966456.

The previous prime is 1228966447. The next prime is 1228966463. The reversal of 1228966457 is 7546698221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1119638521 + 109327936 = 33461^2 + 10456^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228966457 - 2⁶ = 1228966393 is a prime.

It is a super-2 number, since 2×1228966457² = 3020717104862265698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1228966447) 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 as a sum of consecutive naturals, namely, 614483228 + 614483229.

It is an arithmetic number, because the mean of its divisors is an integer number (614483229).

Almost surely, 2^1228966457 is an apocalyptic number.

It is an amenable number.

1228966457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228966457 is an equidigital number, since it uses as much as digits as its factorization.

1228966457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 50.

The square root of 1228966457 is about 35056.6178773709. The cubic root of 1228966457 is about 1071.1410824445.

The spelling of 1228966457 in words is "one billion, two hundred twenty-eight million, nine hundred sixty-six thousand, four hundred fifty-seven".