1123263159 has 16 divisors (see below), whose sum is σ = 1518443520. Its totient is φ = 738485280.

The previous prime is 1123263139. The next prime is 1123263173. The reversal of 1123263159 is 9513623211.

It is not a de Polignac number, because 1123263159 - 2¹³ = 1123254967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123263139) 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 15 ways as a sum of consecutive naturals, for example, 242049 + ... + 246645.

It is an arithmetic number, because the mean of its divisors is an integer number (94902720).

Almost surely, 2^1123263159 is an apocalyptic number.

1123263159 is a deficient number, since it is larger than the sum of its proper divisors (395180361).

1123263159 is a wasteful number, since it uses less digits than its factorization.

1123263159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5710.

The product of its digits is 9720, while the sum is 33.

The square root of 1123263159 is about 33515.1183647022. The cubic root of 1123263159 is about 1039.5064099455.

The spelling of 1123263159 in words is "one billion, one hundred twenty-three million, two hundred sixty-three thousand, one hundred fifty-nine".