538147205 has 8 divisors (see below), whose sum is σ = 647192472. Its totient is φ = 429573888.

The previous prime is 538147187. The next prime is 538147217. The reversal of 538147205 is 502741835.

It is a happy number.

It is a Cunningham number, because it is equal to 23198²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 193710724 + 344436481 = 13918^2 + 18559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 538147205 - 2¹⁰ = 538146181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115472 + ... + 120041.

It is an arithmetic number, because the mean of its divisors is an integer number (80899059).

Almost surely, 2^538147205 is an apocalyptic number.

It is an amenable number.

538147205 is a deficient number, since it is larger than the sum of its proper divisors (109045267).

538147205 is a wasteful number, since it uses less digits than its factorization.

538147205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235975.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 538147205 is about 23198.0000215536. Note that the first 4 decimals coincide. The cubic root of 538147205 is about 813.3928734332.

The spelling of 538147205 in words is "five hundred thirty-eight million, one hundred forty-seven thousand, two hundred five".