538604239643 has 2 divisors, whose sum is σ = 538604239644. Its totient is φ = 538604239642.

The previous prime is 538604239463. The next prime is 538604239669. The reversal of 538604239643 is 346932406835.

Together with previous prime (538604239463) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 538604239643 - 2¹⁴ = 538604223259 is a prime.

It is a super-2 number, since 2×538604239643² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (538604239673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269302119821 + 269302119822.

It is an arithmetic number, because the mean of its divisors is an integer number (269302119822).

Almost surely, 2^538604239643 is an apocalyptic number.

538604239643 is a deficient number, since it is larger than the sum of its proper divisors (1).

538604239643 is an equidigital number, since it uses as much as digits as its factorization.

538604239643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11197440, while the sum is 53.

The spelling of 538604239643 in words is "five hundred thirty-eight billion, six hundred four million, two hundred thirty-nine thousand, six hundred forty-three".