1123809612 has 12 divisors (see below), whose sum is σ = 2622222456. Its totient is φ = 374603200.

The previous prime is 1123809541. The next prime is 1123809671. The reversal of 1123809612 is 2169083211.

It is a tau number, because it is divible by the number of its divisors (12).

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, 46825389 + ... + 46825412.

It is an arithmetic number, because the mean of its divisors is an integer number (218518538).

Almost surely, 2^1123809612 is an apocalyptic number.

1123809612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123809612 is an abundant number, since it is smaller than the sum of its proper divisors (1498412844).

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

1123809612 is a wasteful number, since it uses less digits than its factorization.

1123809612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93650808 (or 93650806 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1123809612 is about 33523.2697092631. The cubic root of 1123809612 is about 1039.6749514256.

The spelling of 1123809612 in words is "one billion, one hundred twenty-three million, eight hundred nine thousand, six hundred twelve".