1123555443 has 8 divisors (see below), whose sum is σ = 1576920000. Its totient is φ = 709613928.

The previous prime is 1123555441. The next prime is 1123555469. The reversal of 1123555443 is 3445553211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1123555443 - 2¹ = 1123555441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123555441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9855693 + ... + 9855806.

It is an arithmetic number, because the mean of its divisors is an integer number (197115000).

Almost surely, 2^1123555443 is an apocalyptic number.

1123555443 is a deficient number, since it is larger than the sum of its proper divisors (453364557).

1123555443 is a wasteful number, since it uses less digits than its factorization.

1123555443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19711521.

The product of its digits is 36000, while the sum is 33.

The square root of 1123555443 is about 33519.4785609800. The cubic root of 1123555443 is about 1039.5965653526.

The spelling of 1123555443 in words is "one billion, one hundred twenty-three million, five hundred fifty-five thousand, four hundred forty-three".