538820129 has 2 divisors, whose sum is σ = 538820130. Its totient is φ = 538820128.

The previous prime is 538820119. The next prime is 538820141. The reversal of 538820129 is 921028835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 530058529 + 8761600 = 23023^2 + 2960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538820129 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 538820092 and 538820101.

It is not a weakly prime, because it can be changed into another prime (538820119) 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, 269410064 + 269410065.

It is an arithmetic number, because the mean of its divisors is an integer number (269410065).

Almost surely, 2^538820129 is an apocalyptic number.

It is an amenable number.

538820129 is a deficient number, since it is larger than the sum of its proper divisors (1).

538820129 is an equidigital number, since it uses as much as digits as its factorization.

538820129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 538820129 is about 23212.4994130318. The cubic root of 538820129 is about 813.7317668281.

The spelling of 538820129 in words is "five hundred thirty-eight million, eight hundred twenty thousand, one hundred twenty-nine".