538686358829 has 2 divisors, whose sum is σ = 538686358830. Its totient is φ = 538686358828.

The previous prime is 538686358711. The next prime is 538686358831. The reversal of 538686358829 is 928853686835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351409468804 + 187276890025 = 592798^2 + 432755^2 .

It is a cyclic number.

It is not a de Polignac number, because 538686358829 - 2²⁴ = 538669581613 is a prime.

It is a super-2 number, since 2×538686358829² (a number of 24 digits) contains 22 as substring.

Together with 538686358831, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538686358879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269343179414 + 269343179415.

It is an arithmetic number, because the mean of its divisors is an integer number (269343179415).

Almost surely, 2^538686358829 is an apocalyptic number.

It is an amenable number.

538686358829 is a deficient number, since it is larger than the sum of its proper divisors (1).

538686358829 is an equidigital number, since it uses as much as digits as its factorization.

538686358829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 597196800, while the sum is 71.

The spelling of 538686358829 in words is "five hundred thirty-eight billion, six hundred eighty-six million, three hundred fifty-eight thousand, eight hundred twenty-nine".