1530309503 has 2 divisors, whose sum is σ = 1530309504. Its totient is φ = 1530309502.

The previous prime is 1530309493. The next prime is 1530309511. The reversal of 1530309503 is 3059030351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1530309503 - 2¹² = 1530305407 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1530309103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765154751 + 765154752.

It is an arithmetic number, because the mean of its divisors is an integer number (765154752).

Almost surely, 2^1530309503 is an apocalyptic number.

1530309503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1530309503 is an equidigital number, since it uses as much as digits as its factorization.

1530309503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6075, while the sum is 29.

The square root of 1530309503 is about 39119.1705305723. The cubic root of 1530309503 is about 1152.3730463723.

Adding to 1530309503 its reverse (3059030351), we get a palindrome (4589339854).

The spelling of 1530309503 in words is "one billion, five hundred thirty million, three hundred nine thousand, five hundred three".