543381869 has 2 divisors, whose sum is σ = 543381870. Its totient is φ = 543381868.

The previous prime is 543381809. The next prime is 543381901. The reversal of 543381869 is 968183345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 531855844 + 11526025 = 23062^2 + 3395^2 .

It is a cyclic number.

It is not a de Polignac number, because 543381869 - 2¹² = 543377773 is a prime.

It is a super-2 number, since 2×543381869² = 590527711115866322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (543381809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271690934 + 271690935.

It is an arithmetic number, because the mean of its divisors is an integer number (271690935).

Almost surely, 2^543381869 is an apocalyptic number.

It is an amenable number.

543381869 is a deficient number, since it is larger than the sum of its proper divisors (1).

543381869 is an equidigital number, since it uses as much as digits as its factorization.

543381869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 47.

The square root of 543381869 is about 23310.5527390493. The cubic root of 543381869 is about 816.0217123252.

The spelling of 543381869 in words is "five hundred forty-three million, three hundred eighty-one thousand, eight hundred sixty-nine".