1189360128 has 80 divisors (see below), whose sum is σ = 3456626976. Its totient is φ = 360407040.

The previous prime is 1189360111. The next prime is 1189360181. The reversal of 1189360128 is 8210639811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18301 + ... + 52092.

Almost surely, 2^1189360128 is an apocalyptic number.

It is an amenable number.

1189360128 is an abundant number, since it is smaller than the sum of its proper divisors (2267266848).

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

1189360128 is an equidigital number, since it uses as much as digits as its factorization.

1189360128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70425 (or 70409 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 1189360128 is about 34487.1008929426. The cubic root of 1189360128 is about 1059.5085321049.

Adding to 1189360128 its reverse (8210639811), we get a palindrome (9399999939).

The spelling of 1189360128 in words is "one billion, one hundred eighty-nine million, three hundred sixty thousand, one hundred twenty-eight".