538863109 has 2 divisors, whose sum is σ = 538863110. Its totient is φ = 538863108.

The previous prime is 538863097. The next prime is 538863121. The reversal of 538863109 is 901368835.

It is a balanced prime because it is at equal distance from previous prime (538863097) and next prime (538863121).

It can be written as a sum of positive squares in only one way, i.e., 530012484 + 8850625 = 23022^2 + 2975^2 .

It is a cyclic number.

It is not a de Polignac number, because 538863109 - 2⁵ = 538863077 is a prime.

It is a super-2 number, since 2×538863109² = 580746900482291762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538863139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269431554 + 269431555.

It is an arithmetic number, because the mean of its divisors is an integer number (269431555).

Almost surely, 2^538863109 is an apocalyptic number.

It is an amenable number.

538863109 is a deficient number, since it is larger than the sum of its proper divisors (1).

538863109 is an equidigital number, since it uses as much as digits as its factorization.

538863109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 538863109 is about 23213.4251888858. The cubic root of 538863109 is about 813.7534025340.

The spelling of 538863109 in words is "five hundred thirty-eight million, eight hundred sixty-three thousand, one hundred nine".