1189886080 has 32 divisors (see below), whose sum is σ = 2844572940. Its totient is φ = 475954176.

The previous prime is 1189886063. The next prime is 1189886081. The reversal of 1189886080 is 806889811.

1189886080 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1005143616 + 184742464 = 31704^2 + 13592^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (1189886081) 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, 928959 + ... + 930238.

Almost surely, 2^1189886080 is an apocalyptic number.

1189886080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1189886080 is an abundant number, since it is smaller than the sum of its proper divisors (1654686860).

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

1189886080 is an equidigital number, since it uses as much as digits as its factorization.

1189886080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859216 (or 1859204 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 49.

The square root of 1189886080 is about 34494.7253938917. The cubic root of 1189886080 is about 1059.6646856806.

The spelling of 1189886080 in words is "one billion, one hundred eighty-nine million, eight hundred eighty-six thousand, eighty".