1543243133 has 2 divisors, whose sum is σ = 1543243134. Its totient is φ = 1543243132.

The previous prime is 1543243127. The next prime is 1543243151. The reversal of 1543243133 is 3313423451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1141561369 + 401681764 = 33787^2 + 20042^2 .

It is a cyclic number.

It is not a de Polignac number, because 1543243133 - 2¹⁴ = 1543226749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1543243096 and 1543243105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1543243123) 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, 771621566 + 771621567.

It is an arithmetic number, because the mean of its divisors is an integer number (771621567).

Almost surely, 2^1543243133 is an apocalyptic number.

It is an amenable number.

1543243133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1543243133 is an equidigital number, since it uses as much as digits as its factorization.

1543243133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 29.

The square root of 1543243133 is about 39284.1333492289. The cubic root of 1543243133 is about 1155.6104250042.

Adding to 1543243133 its reverse (3313423451), we get a palindrome (4856666584).

The spelling of 1543243133 in words is "one billion, five hundred forty-three million, two hundred forty-three thousand, one hundred thirty-three".