538947601589 has 2 divisors, whose sum is σ = 538947601590. Its totient is φ = 538947601588.

The previous prime is 538947601571. The next prime is 538947601601. The reversal of 538947601589 is 985106749835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495939892900 + 43007708689 = 704230^2 + 207383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538947601589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538947601889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269473800794 + 269473800795.

It is an arithmetic number, because the mean of its divisors is an integer number (269473800795).

Almost surely, 2^538947601589 is an apocalyptic number.

It is an amenable number.

538947601589 is a deficient number, since it is larger than the sum of its proper divisors (1).

538947601589 is an equidigital number, since it uses as much as digits as its factorization.

538947601589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65318400, while the sum is 65.

The spelling of 538947601589 in words is "five hundred thirty-eight billion, nine hundred forty-seven million, six hundred one thousand, five hundred eighty-nine".