538665238 has 16 divisors (see below), whose sum is σ = 877962240. Its totient is φ = 246925800.

The previous prime is 538665217. The next prime is 538665241. The reversal of 538665238 is 832566835.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227458 + ... + 229813.

It is an arithmetic number, because the mean of its divisors is an integer number (54872640).

Almost surely, 2^538665238 is an apocalyptic number.

538665238 is a deficient number, since it is larger than the sum of its proper divisors (339297002).

538665238 is a wasteful number, since it uses less digits than its factorization.

538665238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457323.

The product of its digits is 1036800, while the sum is 46.

The square root of 538665238 is about 23209.1628026519. The cubic root of 538665238 is about 813.6537866887.

The spelling of 538665238 in words is "five hundred thirty-eight million, six hundred sixty-five thousand, two hundred thirty-eight".