1530037021 has 2 divisors, whose sum is σ = 1530037022. Its totient is φ = 1530037020.

The previous prime is 1530036971. The next prime is 1530037031. The reversal of 1530037021 is 1207300351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 814474521 + 715562500 = 28539^2 + 26750^2 .

It is an emirp because it is prime and its reverse (1207300351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1530037021 - 2⁹ = 1530036509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1530036983 and 1530037001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1530037031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765018510 + 765018511.

It is an arithmetic number, because the mean of its divisors is an integer number (765018511).

Almost surely, 2^1530037021 is an apocalyptic number.

It is an amenable number.

1530037021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1530037021 is an equidigital number, since it uses as much as digits as its factorization.

1530037021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 1530037021 is about 39115.6876585341. The cubic root of 1530037021 is about 1152.3046463634.

Adding to 1530037021 its reverse (1207300351), we get a palindrome (2737337372).

The spelling of 1530037021 in words is "one billion, five hundred thirty million, thirty-seven thousand, twenty-one".