1189131048 has 96 divisors (see below), whose sum is σ = 3697075200. Its totient is φ = 338235264.

The previous prime is 1189131043. The next prime is 1189131059. The reversal of 1189131048 is 8401319811.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1189131043) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 110265 + ... + 120567.

It is an arithmetic number, because the mean of its divisors is an integer number (38511200).

Almost surely, 2^1189131048 is an apocalyptic number.

1189131048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1189131048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1848537600).

1189131048 is an abundant number, since it is smaller than the sum of its proper divisors (2507944152).

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

1189131048 is a wasteful number, since it uses less digits than its factorization.

1189131048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10551 (or 10544 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 1189131048 is about 34483.7794912333. The cubic root of 1189131048 is about 1059.4405045459.

The spelling of 1189131048 in words is "one billion, one hundred eighty-nine million, one hundred thirty-one thousand, forty-eight".