538320092209 has 9 divisors (see below), whose sum is σ = 571861929387. Its totient is φ = 506642465184.

The previous prime is 538320092207. The next prime is 538320092221. The reversal of 538320092209 is 902290023835.

The square root of 538320092209 is 733703.

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

It can be written as a sum of positive squares in only one way, i.e., 419107338225 + 119212753984 = 647385^2 + 345272^2 .

It is not a de Polignac number, because 538320092209 - 2¹ = 538320092207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538320092207) 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, 12451372 + ... + 12494530.

Almost surely, 2^538320092209 is an apocalyptic number.

538320092209 is the 733703-rd square number.

538320092209 is the 366852-nd centered octagonal number.

It is an amenable number.

538320092209 is a deficient number, since it is larger than the sum of its proper divisors (33541837178).

538320092209 is an frugal number, since it uses more digits than its factorization.

538320092209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86352 (or 43176 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 538320092209 in words is "five hundred thirty-eight billion, three hundred twenty million, ninety-two thousand, two hundred nine".