1148561112 has 32 divisors (see below), whose sum is σ = 2898244800. Its totient is φ = 379274784.

The previous prime is 1148561111. The next prime is 1148561159. The reversal of 1148561112 is 2111658411.

It is a self number, because there is not a number n which added to its sum of digits gives 1148561112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148561111) 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, 221062 + ... + 226197.

It is an arithmetic number, because the mean of its divisors is an integer number (90570150).

Almost surely, 2^1148561112 is an apocalyptic number.

1148561112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1148561112 is an abundant number, since it is smaller than the sum of its proper divisors (1749683688).

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

1148561112 is a wasteful number, since it uses less digits than its factorization.

1148561112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447375 (or 447371 counting only the distinct ones).

The product of its digits is 1920, while the sum is 30.

The square root of 1148561112 is about 33890.4280291648. The cubic root of 1148561112 is about 1047.2524119838.

The spelling of 1148561112 in words is "one billion, one hundred forty-eight million, five hundred sixty-one thousand, one hundred twelve".