1118836543 has 12 divisors (see below), whose sum is σ = 1230607504. Its totient is φ = 1016452800.

The previous prime is 1118836513. The next prime is 1118836561. The reversal of 1118836543 is 3456388111.

It is a happy number.

It is not a de Polignac number, because 1118836543 - 2⁹ = 1118836031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1118836496 and 1118836505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118836513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336055 + ... + 339367.

Almost surely, 2^1118836543 is an apocalyptic number.

1118836543 is a deficient number, since it is larger than the sum of its proper divisors (111770961).

1118836543 is a wasteful number, since it uses less digits than its factorization.

1118836543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6126 (or 6115 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 1118836543 is about 33449.0140811355. The cubic root of 1118836543 is about 1038.1390979475.

The spelling of 1118836543 in words is "one billion, one hundred eighteen million, eight hundred thirty-six thousand, five hundred forty-three".