1530204397 has 2 divisors, whose sum is σ = 1530204398. Its totient is φ = 1530204396.

The previous prime is 1530204307. The next prime is 1530204437. The reversal of 1530204397 is 7934020351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1460080521 + 70123876 = 38211^2 + 8374^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1530204397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1530204307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765102198 + 765102199.

It is an arithmetic number, because the mean of its divisors is an integer number (765102199).

Almost surely, 2^1530204397 is an apocalyptic number.

It is an amenable number.

1530204397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1530204397 is an equidigital number, since it uses as much as digits as its factorization.

1530204397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 1530204397 is about 39117.8270996741. The cubic root of 1530204397 is about 1152.3466630178.

The spelling of 1530204397 in words is "one billion, five hundred thirty million, two hundred four thousand, three hundred ninety-seven".