1538523241 has 2 divisors, whose sum is σ = 1538523242. Its totient is φ = 1538523240.

The previous prime is 1538523223. The next prime is 1538523269. The reversal of 1538523241 is 1423258351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 772617616 + 765905625 = 27796^2 + 27675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1538523241 - 2¹³ = 1538515049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1538523197 and 1538523206.

It is not a weakly prime, because it can be changed into another prime (1538523281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769261620 + 769261621.

It is an arithmetic number, because the mean of its divisors is an integer number (769261621).

Almost surely, 2^1538523241 is an apocalyptic number.

It is an amenable number.

1538523241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538523241 is an equidigital number, since it uses as much as digits as its factorization.

1538523241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 34.

The square root of 1538523241 is about 39224.0135758696. The cubic root of 1538523241 is about 1154.4311063065.

The spelling of 1538523241 in words is "one billion, five hundred thirty-eight million, five hundred twenty-three thousand, two hundred forty-one".