1123689633 has 48 divisors (see below), whose sum is σ = 1739162880. Its totient is φ = 639786400.

The previous prime is 1123689599. The next prime is 1123689649. The reversal of 1123689633 is 3369863211.

It is not a de Polignac number, because 1123689633 - 2⁶ = 1123689569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123689673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1029418 + ... + 1030508.

It is an arithmetic number, because the mean of its divisors is an integer number (36232560).

Almost surely, 2^1123689633 is an apocalyptic number.

It is an amenable number.

1123689633 is a deficient number, since it is larger than the sum of its proper divisors (615473247).

1123689633 is a wasteful number, since it uses less digits than its factorization.

1123689633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210 (or 1187 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The square root of 1123689633 is about 33521.4801731666. The cubic root of 1123689633 is about 1039.6379512081.

The spelling of 1123689633 in words is "one billion, one hundred twenty-three million, six hundred eighty-nine thousand, six hundred thirty-three".