1123536161 has 8 divisors (see below), whose sum is σ = 1255570848. Its totient is φ = 996484000.

The previous prime is 1123536149. The next prime is 1123536179. The reversal of 1123536161 is 1616353211.

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

It is a cyclic number.

It is not a de Polignac number, because 1123536161 - 2¹⁰ = 1123535137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123536761) 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, 1245155 + ... + 1246056.

It is an arithmetic number, because the mean of its divisors is an integer number (156946356).

Almost surely, 2^1123536161 is an apocalyptic number.

1123536161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1123536161 is a deficient number, since it is larger than the sum of its proper divisors (132034687).

1123536161 is a wasteful number, since it uses less digits than its factorization.

1123536161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491263.

The product of its digits is 3240, while the sum is 29.

The square root of 1123536161 is about 33519.1909359400. The cubic root of 1123536161 is about 1039.5906182745.

Adding to 1123536161 its reverse (1616353211), we get a palindrome (2739889372).

The spelling of 1123536161 in words is "one billion, one hundred twenty-three million, five hundred thirty-six thousand, one hundred sixty-one".