538066493 has 8 divisors (see below), whose sum is σ = 570197880. Its totient is φ = 506840320.

The previous prime is 538066447. The next prime is 538066511. The reversal of 538066493 is 394660835.

It can be written as a sum of positive squares in 4 ways, for example, as 44649124 + 493417369 = 6682^2 + 22213^2 .

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 538066493 - 2¹⁸ = 537804349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538060493) 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, 225080 + ... + 227457.

It is an arithmetic number, because the mean of its divisors is an integer number (71274735).

Almost surely, 2^538066493 is an apocalyptic number.

It is an amenable number.

538066493 is a deficient number, since it is larger than the sum of its proper divisors (32131387).

538066493 is a wasteful number, since it uses less digits than its factorization.

538066493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452607.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 538066493 is about 23196.2603235953. The cubic root of 538066493 is about 813.3522068353.

The spelling of 538066493 in words is "five hundred thirty-eight million, sixty-six thousand, four hundred ninety-three".