1428516251 has 2 divisors, whose sum is σ = 1428516252. Its totient is φ = 1428516250.

The previous prime is 1428516241. The next prime is 1428516317. The reversal of 1428516251 is 1526158241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1428516251 - 2²⁶ = 1361407387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1428516241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714258125 + 714258126.

It is an arithmetic number, because the mean of its divisors is an integer number (714258126).

Almost surely, 2^1428516251 is an apocalyptic number.

1428516251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428516251 is an equidigital number, since it uses as much as digits as its factorization.

1428516251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 35.

The square root of 1428516251 is about 37795.7173632146. The cubic root of 1428516251 is about 1126.2333800782.

The spelling of 1428516251 in words is "one billion, four hundred twenty-eight million, five hundred sixteen thousand, two hundred fifty-one".