538808129 has 2 divisors, whose sum is σ = 538808130. Its totient is φ = 538808128.

The previous prime is 538808113. The next prime is 538808161. The reversal of 538808129 is 921808835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 537312400 + 1495729 = 23180^2 + 1223^2 .

It is a cyclic number.

It is not a de Polignac number, because 538808129 - 2⁴ = 538808113 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 538808129.

It is not a weakly prime, because it can be changed into another prime (538802129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269404064 + 269404065.

It is an arithmetic number, because the mean of its divisors is an integer number (269404065).

Almost surely, 2^538808129 is an apocalyptic number.

It is an amenable number.

538808129 is a deficient number, since it is larger than the sum of its proper divisors (1).

538808129 is an equidigital number, since it uses as much as digits as its factorization.

538808129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 538808129 is about 23212.2409301644. The cubic root of 538808129 is about 813.7257259417.

The spelling of 538808129 in words is "five hundred thirty-eight million, eight hundred eight thousand, one hundred twenty-nine".