1161940160 has 56 divisors (see below), whose sum is σ = 2773375200. Its totient is φ = 463683584.

The previous prime is 1161940127. The next prime is 1161940163. The reversal of 1161940160 is 610491611.

It is not an unprimeable number, because it can be changed into a prime (1161940163) 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 7 ways as a sum of consecutive naturals, for example, 139637 + ... + 147723.

Almost surely, 2^1161940160 is an apocalyptic number.

1161940160 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 1161940160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1386687600).

1161940160 is an abundant number, since it is smaller than the sum of its proper divisors (1611435040).

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

1161940160 is an equidigital number, since it uses as much as digits as its factorization.

1161940160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8553 (or 8543 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1161940160 is about 34087.2433617035. The cubic root of 1161940160 is about 1051.3030413755.

The spelling of 1161940160 in words is "one billion, one hundred sixty-one million, nine hundred forty thousand, one hundred sixty".