1161318288 has 80 divisors (see below), whose sum is σ = 3236528960. Its totient is φ = 356700672.

The previous prime is 1161318287. The next prime is 1161318293. The reversal of 1161318288 is 8828131611.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1161318283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456123 + ... + 458661.

It is an arithmetic number, because the mean of its divisors is an integer number (40456612).

Almost surely, 2^1161318288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161318288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1618264480).

1161318288 is an abundant number, since it is smaller than the sum of its proper divisors (2075210672).

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

1161318288 is a wasteful number, since it uses less digits than its factorization.

1161318288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3296 (or 3290 counting only the distinct ones).

The product of its digits is 18432, while the sum is 39.

The square root of 1161318288 is about 34078.1203707012. The cubic root of 1161318288 is about 1051.1154549530.

Adding to 1161318288 its reverse (8828131611), we get a palindrome (9989449899).

The spelling of 1161318288 in words is "one billion, one hundred sixty-one million, three hundred eighteen thousand, two hundred eighty-eight".