538863169329 has 9 divisors (see below), whose sum is σ = 778361092249. Its totient is φ = 359240644740.

The previous prime is 538863169321. The next prime is 538863169331. The reversal of 538863169329 is 923961368835.

The square root of 538863169329 is 734073.

It is a perfect power (a square), and thus also a powerful number.

538863169329 is a `hidden beast` number, since 5 + 388 + 63 + 169 + 32 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 538863169329 - 2³ = 538863169321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (538863169321) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2079874 + ... + 2324564.

Almost surely, 2^538863169329 is an apocalyptic number.

538863169329 is the 734073-rd square number.

538863169329 is the 367037-th centered octagonal number.

It is an amenable number.

538863169329 is a deficient number, since it is larger than the sum of its proper divisors (239497922920).

538863169329 is an frugal number, since it uses more digits than its factorization.

538863169329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489388 (or 244694 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 63.

The spelling of 538863169329 in words is "five hundred thirty-eight billion, eight hundred sixty-three million, one hundred sixty-nine thousand, three hundred twenty-nine".