1428751517 has 2 divisors, whose sum is σ = 1428751518. Its totient is φ = 1428751516.

The previous prime is 1428751501. The next prime is 1428751523. The reversal of 1428751517 is 7151578241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1049047321 + 379704196 = 32389^2 + 19486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428751517 - 2⁴ = 1428751501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428751537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714375758 + 714375759.

It is an arithmetic number, because the mean of its divisors is an integer number (714375759).

Almost surely, 2^1428751517 is an apocalyptic number.

It is an amenable number.

1428751517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428751517 is an equidigital number, since it uses as much as digits as its factorization.

1428751517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78400, while the sum is 41.

The square root of 1428751517 is about 37798.8295718267. The cubic root of 1428751517 is about 1126.2952041043.

The spelling of 1428751517 in words is "one billion, four hundred twenty-eight million, seven hundred fifty-one thousand, five hundred seventeen".