1189271160 has 576 divisors, whose sum is σ = 5108987520. Its totient is φ = 246032640.

The previous prime is 1189271141. The next prime is 1189271173. The reversal of 1189271160 is 611729811.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5238967 + ... + 5239193.

It is an arithmetic number, because the mean of its divisors is an integer number (8869770).

Almost surely, 2^1189271160 is an apocalyptic number.

1189271160 is a gapful number since it is divisible by the number (10) 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 1189271160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2554493760).

1189271160 is an abundant number, since it is smaller than the sum of its proper divisors (3919716360).

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

1189271160 is a wasteful number, since it uses less digits than its factorization.

1189271160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 36.

The square root of 1189271160 is about 34485.8109952485. The cubic root of 1189271160 is about 1059.4821132199.

The spelling of 1189271160 in words is "one billion, one hundred eighty-nine million, two hundred seventy-one thousand, one hundred sixty".