1181122648 has 8 divisors (see below), whose sum is σ = 2214604980. Its totient is φ = 590561320.

The previous prime is 1181122633. The next prime is 1181122673. The reversal of 1181122648 is 8462211811.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73820158 + ... + 73820173.

Almost surely, 2^1181122648 is an apocalyptic number.

It is an amenable number.

1181122648 is a deficient number, since it is larger than the sum of its proper divisors (1033482332).

1181122648 is a wasteful number, since it uses less digits than its factorization.

1181122648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147640337 (or 147640333 counting only the distinct ones).

The product of its digits is 6144, while the sum is 34.

The square root of 1181122648 is about 34367.4649632469. The cubic root of 1181122648 is about 1057.0568195518.

The spelling of 1181122648 in words is "one billion, one hundred eighty-one million, one hundred twenty-two thousand, six hundred forty-eight".