538537209 has 8 divisors (see below), whose sum is σ = 820628160. Its totient is φ = 307735536.

The previous prime is 538537189. The next prime is 538537211. The reversal of 538537209 is 902735835.

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

It is not a de Polignac number, because 538537209 - 2¹¹ = 538535161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (538937209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12822294 + ... + 12822335.

It is an arithmetic number, because the mean of its divisors is an integer number (102578520).

Almost surely, 2^538537209 is an apocalyptic number.

It is an amenable number.

538537209 is a deficient number, since it is larger than the sum of its proper divisors (282090951).

538537209 is a wasteful number, since it uses less digits than its factorization.

538537209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25644639.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 538537209 is about 23206.4044823837. The cubic root of 538537209 is about 813.5893189838.

The spelling of 538537209 in words is "five hundred thirty-eight million, five hundred thirty-seven thousand, two hundred nine".