1123655500 has 48 divisors (see below), whose sum is σ = 2677173408. Its totient is φ = 408600000.

The previous prime is 1123655453. The next prime is 1123655503. The reversal of 1123655500 is 55563211.

It is not an unprimeable number, because it can be changed into a prime (1123655503) 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, 96651 + ... + 107650.

It is an arithmetic number, because the mean of its divisors is an integer number (55774446).

Almost surely, 2^1123655500 is an apocalyptic number.

1123655500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123655500 is an abundant number, since it is smaller than the sum of its proper divisors (1553517908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123655500 is a wasteful number, since it uses less digits than its factorization.

1123655500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204331 (or 204319 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 1123655500 is about 33520.9710479873. The cubic root of 1123655500 is about 1039.6274244812.

The spelling of 1123655500 in words is "one billion, one hundred twenty-three million, six hundred fifty-five thousand, five hundred".