538081543 has 2 divisors, whose sum is σ = 538081544. Its totient is φ = 538081542.

The previous prime is 538081541. The next prime is 538081553. The reversal of 538081543 is 345180835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 538081543 - 2¹ = 538081541 is a prime.

Together with 538081541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538081541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269040771 + 269040772.

It is an arithmetic number, because the mean of its divisors is an integer number (269040772).

Almost surely, 2^538081543 is an apocalyptic number.

538081543 is a deficient number, since it is larger than the sum of its proper divisors (1).

538081543 is an equidigital number, since it uses as much as digits as its factorization.

538081543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 538081543 is about 23196.5847270670. The cubic root of 538081543 is about 813.3597900595.

The spelling of 538081543 in words is "five hundred thirty-eight million, eighty-one thousand, five hundred forty-three".