1428730001 has 2 divisors, whose sum is σ = 1428730002. Its totient is φ = 1428730000.

The previous prime is 1428729971. The next prime is 1428730007. The reversal of 1428730001 is 1000378241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1397638225 + 31091776 = 37385^2 + 5576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1428730001 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1428730007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714365000 + 714365001.

It is an arithmetic number, because the mean of its divisors is an integer number (714365001).

Almost surely, 2^1428730001 is an apocalyptic number.

It is an amenable number.

1428730001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428730001 is an equidigital number, since it uses as much as digits as its factorization.

1428730001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1428730001 is about 37798.5449587679. The cubic root of 1428730001 is about 1126.2895503362.

The spelling of 1428730001 in words is "one billion, four hundred twenty-eight million, seven hundred thirty thousand, one".