1135645543 has 4 divisors (see below), whose sum is σ = 1202448240. Its totient is φ = 1068842848.

The previous prime is 1135645531. The next prime is 1135645549. The reversal of 1135645543 is 3455465311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3455465311 = 587 ⋅5886653.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1135645543 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 (1135645549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33401323 + ... + 33401356.

It is an arithmetic number, because the mean of its divisors is an integer number (300612060).

Almost surely, 2^1135645543 is an apocalyptic number.

1135645543 is a deficient number, since it is larger than the sum of its proper divisors (66802697).

1135645543 is an equidigital number, since it uses as much as digits as its factorization.

1135645543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66802696.

The product of its digits is 108000, while the sum is 37.

The square root of 1135645543 is about 33699.3403941383. The cubic root of 1135645543 is about 1043.3121545602.

The spelling of 1135645543 in words is "one billion, one hundred thirty-five million, six hundred forty-five thousand, five hundred forty-three".