1123209580 has 12 divisors (see below), whose sum is σ = 2358740160. Its totient is φ = 449283824.

The previous prime is 1123209559. The next prime is 1123209599. The reversal of 1123209580 is 859023211.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28080220 + ... + 28080259.

It is an arithmetic number, because the mean of its divisors is an integer number (196561680).

Almost surely, 2^1123209580 is an apocalyptic number.

1123209580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123209580 is an abundant number, since it is smaller than the sum of its proper divisors (1235530580).

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

1123209580 is a wasteful number, since it uses less digits than its factorization.

1123209580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56160488 (or 56160486 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1123209580 is about 33514.3190293343. The cubic root of 1123209580 is about 1039.4898817321.

The spelling of 1123209580 in words is "one billion, one hundred twenty-three million, two hundred nine thousand, five hundred eighty".