1105643503 has 2 divisors, whose sum is σ = 1105643504. Its totient is φ = 1105643502.

The previous prime is 1105643491. The next prime is 1105643521. The reversal of 1105643503 is 3053465011.

It is a weak prime.

It is an emirp because it is prime and its reverse (3053465011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1105643503 - 2⁵ = 1105643471 is a prime.

It is a super-2 number, since 2×1105643503² = 2444895111452222018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105643543) 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, 552821751 + 552821752.

It is an arithmetic number, because the mean of its divisors is an integer number (552821752).

Almost surely, 2^1105643503 is an apocalyptic number.

1105643503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105643503 is an equidigital number, since it uses as much as digits as its factorization.

1105643503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 1105643503 is about 33251.2180679144. The cubic root of 1105643503 is about 1034.0424613456.

The spelling of 1105643503 in words is "one billion, one hundred five million, six hundred forty-three thousand, five hundred three".