1530155172449 has 2 divisors, whose sum is σ = 1530155172450. Its totient is φ = 1530155172448.

The previous prime is 1530155172353. The next prime is 1530155172461. The reversal of 1530155172449 is 9442715510351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 795294754849 + 734860417600 = 891793^2 + 857240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1530155172449 - 2¹⁶ = 1530155106913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1530155172499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765077586224 + 765077586225.

It is an arithmetic number, because the mean of its divisors is an integer number (765077586225).

Almost surely, 2^{1530155172449} is an apocalyptic number.

It is an amenable number.

1530155172449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1530155172449 is an equidigital number, since it uses as much as digits as its factorization.

1530155172449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 1530155172449 in words is "one trillion, five hundred thirty billion, one hundred fifty-five million, one hundred seventy-two thousand, four hundred forty-nine".