538403133 has 24 divisors (see below), whose sum is σ = 780895200. Its totient is φ = 329041440.

The previous prime is 538403123. The next prime is 538403137. The reversal of 538403133 is 331304835.

It is not a de Polignac number, because 538403133 - 2¹⁷ = 538272061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 538403133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538403137) 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 23 ways as a sum of consecutive naturals, for example, 49863 + ... + 59691.

It is an arithmetic number, because the mean of its divisors is an integer number (32537300).

Almost surely, 2^538403133 is an apocalyptic number.

It is an amenable number.

538403133 is a deficient number, since it is larger than the sum of its proper divisors (242492067).

538403133 is a wasteful number, since it uses less digits than its factorization.

538403133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9913 (or 9882 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 538403133 is about 23203.5155310569. The cubic root of 538403133 is about 813.5217954197.

Adding to 538403133 its reverse (331304835), we get a palindrome (869707968).

The spelling of 538403133 in words is "five hundred thirty-eight million, four hundred three thousand, one hundred thirty-three".