538784569 has 2 divisors, whose sum is σ = 538784570. Its totient is φ = 538784568.

The previous prime is 538784537. The next prime is 538784573. The reversal of 538784569 is 965487835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 464618025 + 74166544 = 21555^2 + 8612^2 .

It is a cyclic number.

It is not a de Polignac number, because 538784569 - 2⁵ = 538784537 is a prime.

It is a super-2 number, since 2×538784569² = 580577623585031522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (538784669) 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, 269392284 + 269392285.

It is an arithmetic number, because the mean of its divisors is an integer number (269392285).

Almost surely, 2^538784569 is an apocalyptic number.

It is an amenable number.

538784569 is a deficient number, since it is larger than the sum of its proper divisors (1).

538784569 is an equidigital number, since it uses as much as digits as its factorization.

538784569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 55.

The square root of 538784569 is about 23211.7334337615. The cubic root of 538784569 is about 813.7138654069.

The spelling of 538784569 in words is "five hundred thirty-eight million, seven hundred eighty-four thousand, five hundred sixty-nine".