1189868008 has 64 divisors (see below), whose sum is σ = 2724134400. Its totient is φ = 475865280.

The previous prime is 1189867963. The next prime is 1189868021. The reversal of 1189868008 is 8008689811.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62943 + ... + 79633.

It is an arithmetic number, because the mean of its divisors is an integer number (42564600).

Almost surely, 2^1189868008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1189868008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1362067200).

1189868008 is an abundant number, since it is smaller than the sum of its proper divisors (1534266392).

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

1189868008 is a wasteful number, since it uses less digits than its factorization.

1189868008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16790 (or 16786 counting only the distinct ones).

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

The square root of 1189868008 is about 34494.4634398044. The cubic root of 1189868008 is about 1059.6593209213.

The spelling of 1189868008 in words is "one billion, one hundred eighty-nine million, eight hundred sixty-eight thousand, eight".