1181542960 has 160 divisors (see below), whose sum is σ = 3052304640. Its totient is φ = 422682624.

The previous prime is 1181542919. The next prime is 1181542963. The reversal of 1181542960 is 692451811.

It is not an unprimeable number, because it can be changed into a prime (1181542963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5997582 + ... + 5997778.

It is an arithmetic number, because the mean of its divisors is an integer number (19076904).

Almost surely, 2^1181542960 is an apocalyptic number.

1181542960 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 1181542960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1526152320).

1181542960 is an abundant number, since it is smaller than the sum of its proper divisors (1870761680).

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

1181542960 is a wasteful number, since it uses less digits than its factorization.

1181542960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 1181542960 is about 34373.5793888271. The cubic root of 1181542960 is about 1057.1821920735.

The spelling of 1181542960 in words is "one billion, one hundred eighty-one million, five hundred forty-two thousand, nine hundred sixty".