1189115136 has 108 divisors (see below), whose sum is σ = 3740274720. Its totient is φ = 360330240.

The previous prime is 1189115131. The next prime is 1189115173. The reversal of 1189115136 is 6315119811.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1189115136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189115131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1885 + ... + 48803.

Almost surely, 2^1189115136 is an apocalyptic number.

1189115136 is a gapful number since it is divisible by the number (16) 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 1189115136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1870137360).

1189115136 is an abundant number, since it is smaller than the sum of its proper divisors (2551159584).

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

1189115136 is a wasteful number, since it uses less digits than its factorization.

1189115136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46952 (or 46935 counting only the distinct ones).

The product of its digits is 6480, while the sum is 36.

The square root of 1189115136 is about 34483.5487732919. The cubic root of 1189115136 is about 1059.4357789965.

The spelling of 1189115136 in words is "one billion, one hundred eighty-nine million, one hundred fifteen thousand, one hundred thirty-six".