1123163566 has 16 divisors (see below), whose sum is σ = 1931582304. Its totient is φ = 479816064.

The previous prime is 1123163557. The next prime is 1123163567. The reversal of 1123163566 is 6653613211.

It is a super-2 number, since 2×1123163566² = 2522992791979672712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123163567) 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, 123775 + ... + 132538.

It is an arithmetic number, because the mean of its divisors is an integer number (120723894).

Almost surely, 2^1123163566 is an apocalyptic number.

1123163566 is a deficient number, since it is larger than the sum of its proper divisors (808418738).

1123163566 is a wasteful number, since it uses less digits than its factorization.

1123163566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256635.

The product of its digits is 19440, while the sum is 34.

The square root of 1123163566 is about 33513.6325396099. The cubic root of 1123163566 is about 1039.4756867735.

Adding to 1123163566 its reverse (6653613211), we get a palindrome (7776776777).

The spelling of 1123163566 in words is "one billion, one hundred twenty-three million, one hundred sixty-three thousand, five hundred sixty-six".