1189794732 has 96 divisors (see below), whose sum is σ = 3222912000. Its totient is φ = 334616832.

The previous prime is 1189794719. The next prime is 1189794733. The reversal of 1189794732 is 2374979811.

It is a super-2 number, since 2×1189794732² = 2831223008589903648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1189794733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1821718 + ... + 1822370.

It is an arithmetic number, because the mean of its divisors is an integer number (33572000).

Almost surely, 2^1189794732 is an apocalyptic number.

1189794732 is a gapful number since it is divisible by the number (12) 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 1189794732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1611456000).

1189794732 is an abundant number, since it is smaller than the sum of its proper divisors (2033117268).

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

1189794732 is a wasteful number, since it uses less digits than its factorization.

1189794732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975 (or 973 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 1189794732 is about 34493.4012819844. The cubic root of 1189794732 is about 1059.6375680351.

The spelling of 1189794732 in words is "one billion, one hundred eighty-nine million, seven hundred ninety-four thousand, seven hundred thirty-two".