538968013 has 2 divisors, whose sum is σ = 538968014. Its totient is φ = 538968012.

The previous prime is 538968007. The next prime is 538968037. The reversal of 538968013 is 310869835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 538332804 + 635209 = 23202^2 + 797^2 .

It is a cyclic number.

It is not a de Polignac number, because 538968013 - 2⁵ = 538967981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538968043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269484006 + 269484007.

It is an arithmetic number, because the mean of its divisors is an integer number (269484007).

Almost surely, 2^538968013 is an apocalyptic number.

It is an amenable number.

538968013 is a deficient number, since it is larger than the sum of its proper divisors (1).

538968013 is an equidigital number, since it uses as much as digits as its factorization.

538968013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 538968013 is about 23215.6846334542. The cubic root of 538968013 is about 813.8062053371.

The spelling of 538968013 in words is "five hundred thirty-eight million, nine hundred sixty-eight thousand, thirteen".