1115540343 has 48 divisors (see below), whose sum is σ = 1749305376. Its totient is φ = 709637760.

The previous prime is 1115540311. The next prime is 1115540359. The reversal of 1115540343 is 3430455111.

It is a happy number.

1115540343 is a `hidden beast` number, since 1 + 115 + 540 + 3 + 4 + 3 = 666.

It is not a de Polignac number, because 1115540343 - 2⁵ = 1115540311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115547343) 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 in 47 ways as a sum of consecutive naturals, for example, 475353 + ... + 477693.

It is an arithmetic number, because the mean of its divisors is an integer number (36443862).

Almost surely, 2^1115540343 is an apocalyptic number.

1115540343 is a deficient number, since it is larger than the sum of its proper divisors (633765033).

1115540343 is an equidigital number, since it uses as much as digits as its factorization.

1115540343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446 (or 2434 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1115540343 is about 33399.7057322366. The cubic root of 1115540343 is about 1037.1186092812.

Adding to 1115540343 its reverse (3430455111), we get a palindrome (4545995454).

The spelling of 1115540343 in words is "one billion, one hundred fifteen million, five hundred forty thousand, three hundred forty-three".