1189712148 has 12 divisors (see below), whose sum is σ = 2775995040. Its totient is φ = 396570712.

The previous prime is 1189712137. The next prime is 1189712179. The reversal of 1189712148 is 8412179811.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49571328 + ... + 49571351.

It is an arithmetic number, because the mean of its divisors is an integer number (231332920).

Almost surely, 2^1189712148 is an apocalyptic number.

It is an amenable number.

1189712148 is an abundant number, since it is smaller than the sum of its proper divisors (1586282892).

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

1189712148 is a wasteful number, since it uses less digits than its factorization.

1189712148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99142686 (or 99142684 counting only the distinct ones).

The product of its digits is 32256, while the sum is 42.

The square root of 1189712148 is about 34492.2041626800. The cubic root of 1189712148 is about 1059.6130508834.

The spelling of 1189712148 in words is "one billion, one hundred eighty-nine million, seven hundred twelve thousand, one hundred forty-eight".