1428516317 has 2 divisors, whose sum is σ = 1428516318. Its totient is φ = 1428516316.

The previous prime is 1428516251. The next prime is 1428516343. The reversal of 1428516317 is 7136158241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1372998916 + 55517401 = 37054^2 + 7451^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428516317 - 2¹⁸ = 1428254173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428516217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714258158 + 714258159.

It is an arithmetic number, because the mean of its divisors is an integer number (714258159).

Almost surely, 2^1428516317 is an apocalyptic number.

It is an amenable number.

1428516317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428516317 is an equidigital number, since it uses as much as digits as its factorization.

1428516317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 1428516317 is about 37795.7182363294. The cubic root of 1428516317 is about 1126.2333974229.

The spelling of 1428516317 in words is "one billion, four hundred twenty-eight million, five hundred sixteen thousand, three hundred seventeen".