1181340160 has 320 divisors, whose sum is σ = 3811256064. Its totient is φ = 339148800.

The previous prime is 1181340151. The next prime is 1181340163. The reversal of 1181340160 is 610431811.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (320).

It is not an unprimeable number, because it can be changed into a prime (1181340163) 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 31 ways as a sum of consecutive naturals, for example, 2562330 + ... + 2562790.

Almost surely, 2^1181340160 is an apocalyptic number.

1181340160 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 1181340160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1905628032).

1181340160 is an abundant number, since it is smaller than the sum of its proper divisors (2629915904).

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

1181340160 is a wasteful number, since it uses less digits than its factorization.

1181340160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1181340160 is about 34370.6293221407. The cubic root of 1181340160 is about 1057.1217037056.

Adding to 1181340160 its reverse (610431811), we get a palindrome (1791771971).

The spelling of 1181340160 in words is "one billion, one hundred eighty-one million, three hundred forty thousand, one hundred sixty".