538488493 has 2 divisors, whose sum is σ = 538488494. Its totient is φ = 538488492.

The previous prime is 538488473. The next prime is 538488497. The reversal of 538488493 is 394884835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337897924 + 200590569 = 18382^2 + 14163^2 .

It is a cyclic number.

It is not a de Polignac number, because 538488493 - 2²⁵ = 504934061 is a prime.

It is a super-2 number, since 2×538488493² = 579939714186822098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 538488493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538488497) 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 as a sum of consecutive naturals, namely, 269244246 + 269244247.

It is an arithmetic number, because the mean of its divisors is an integer number (269244247).

Almost surely, 2^538488493 is an apocalyptic number.

It is an amenable number.

538488493 is a deficient number, since it is larger than the sum of its proper divisors (1).

538488493 is an equidigital number, since it uses as much as digits as its factorization.

538488493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3317760, while the sum is 52.

The square root of 538488493 is about 23205.3548346066. The cubic root of 538488493 is about 813.5647858524.

The spelling of 538488493 in words is "five hundred thirty-eight million, four hundred eighty-eight thousand, four hundred ninety-three".