1113543511 has 4 divisors (see below), whose sum is σ = 1117101472. Its totient is φ = 1109985552.

The previous prime is 1113543491. The next prime is 1113543617. The reversal of 1113543511 is 1153453111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1113543511 - 2¹⁷ = 1113412439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113541511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1778511 + ... + 1779136.

It is an arithmetic number, because the mean of its divisors is an integer number (279275368).

Almost surely, 2^1113543511 is an apocalyptic number.

1113543511 is a deficient number, since it is larger than the sum of its proper divisors (3557961).

1113543511 is an equidigital number, since it uses as much as digits as its factorization.

1113543511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3557960.

The product of its digits is 900, while the sum is 25.

The square root of 1113543511 is about 33369.7993850727. The cubic root of 1113543511 is about 1036.4994209966.

Adding to 1113543511 its reverse (1153453111), we get a palindrome (2266996622).

The spelling of 1113543511 in words is "one billion, one hundred thirteen million, five hundred forty-three thousand, five hundred eleven".