538388907 has 8 divisors (see below), whose sum is σ = 820402176. Its totient is φ = 307650792.

The previous prime is 538388881. The next prime is 538388923. The reversal of 538388907 is 709883835.

It is a happy number.

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

It is not a de Polignac number, because 538388907 - 2⁷ = 538388779 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 538388907.

It is not an unprimeable number, because it can be changed into a prime (538388947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12818763 + ... + 12818804.

It is an arithmetic number, because the mean of its divisors is an integer number (102550272).

Almost surely, 2^538388907 is an apocalyptic number.

538388907 is a deficient number, since it is larger than the sum of its proper divisors (282013269).

538388907 is a wasteful number, since it uses less digits than its factorization.

538388907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25637577.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The square root of 538388907 is about 23203.2089806561. The cubic root of 538388907 is about 813.5146302416.

The spelling of 538388907 in words is "five hundred thirty-eight million, three hundred eighty-eight thousand, nine hundred seven".