1161165360 has 40 divisors (see below), whose sum is σ = 3599613360. Its totient is φ = 309644032.

The previous prime is 1161165359. The next prime is 1161165361. The reversal of 1161165360 is 635611611.

It is an interprime number because it is at equal distance from previous prime (1161165359) and next prime (1161165361).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1161165361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2418855 + ... + 2419334.

It is an arithmetic number, because the mean of its divisors is an integer number (89990334).

Almost surely, 2^1161165360 is an apocalyptic number.

1161165360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161165360 is an abundant number, since it is smaller than the sum of its proper divisors (2438448000).

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

1161165360 is a wasteful number, since it uses less digits than its factorization.

1161165360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4838205 (or 4838199 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1161165360 is about 34075.8765111039. The cubic root of 1161165360 is about 1051.0693142746.

Adding to 1161165360 its reverse (635611611), we get a palindrome (1796776971).

The spelling of 1161165360 in words is "one billion, one hundred sixty-one million, one hundred sixty-five thousand, three hundred sixty".