1189663148 has 12 divisors (see below), whose sum is σ = 2083972800. Its totient is φ = 594242352.

The previous prime is 1189663147. The next prime is 1189663151. The reversal of 1189663148 is 8413669811.

It is not an unprimeable number, because it can be changed into a prime (1189663147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142748 + ... + 150851.

It is an arithmetic number, because the mean of its divisors is an integer number (173664400).

Almost surely, 2^1189663148 is an apocalyptic number.

It is an amenable number.

1189663148 is a deficient number, since it is larger than the sum of its proper divisors (894309652).

1189663148 is a wasteful number, since it uses less digits than its factorization.

1189663148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294616 (or 294614 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 1189663148 is about 34491.4938499335. The cubic root of 1189663148 is about 1059.5985034563.

It can be divided in two parts, 1189663 and 148, that added together give a palindrome (1189811).

The spelling of 1189663148 in words is "one billion, one hundred eighty-nine million, six hundred sixty-three thousand, one hundred forty-eight".