1189589604 has 96 divisors (see below), whose sum is σ = 3230330880. Its totient is φ = 333704448.

The previous prime is 1189589581. The next prime is 1189589659. The reversal of 1189589604 is 4069859811.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2569077 + ... + 2569539.

It is an arithmetic number, because the mean of its divisors is an integer number (33649280).

Almost surely, 2^1189589604 is an apocalyptic number.

1189589604 is a gapful number since it is divisible by the number (14) 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 1189589604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1615165440).

1189589604 is an abundant number, since it is smaller than the sum of its proper divisors (2040741276).

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

1189589604 is a wasteful number, since it uses less digits than its factorization.

1189589604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 1189589604 is about 34490.4277155271. The cubic root of 1189589604 is about 1059.5766685029.

The spelling of 1189589604 in words is "one billion, one hundred eighty-nine million, five hundred eighty-nine thousand, six hundred four".