1123993543 has 2 divisors, whose sum is σ = 1123993544. Its totient is φ = 1123993542.

The previous prime is 1123993531. The next prime is 1123993597. The reversal of 1123993543 is 3453993211.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3453993211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123993543 - 2¹³ = 1123985351 is a prime.

It is a super-2 number, since 2×1123993543² = 2526722969411385698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123993496 and 1123993505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123993523) 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, 561996771 + 561996772.

It is an arithmetic number, because the mean of its divisors is an integer number (561996772).

Almost surely, 2^1123993543 is an apocalyptic number.

1123993543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123993543 is an equidigital number, since it uses as much as digits as its factorization.

1123993543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 40.

The square root of 1123993543 is about 33526.0129302606. The cubic root of 1123993543 is about 1039.7316686310.

The spelling of 1123993543 in words is "one billion, one hundred twenty-three million, nine hundred ninety-three thousand, five hundred forty-three".