1161097200 has 120 divisors (see below), whose sum is σ = 4132684400. Its totient is φ = 309623040.

The previous prime is 1161097187. The next prime is 1161097237. The reversal of 1161097200 is 27901611.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42955 + ... + 64554.

Almost surely, 2^1161097200 is an apocalyptic number.

1161097200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161097200 is an abundant number, since it is smaller than the sum of its proper divisors (2971587200).

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

1161097200 is a wasteful number, since it uses less digits than its factorization.

1161097200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107536 (or 107519 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 1161097200 is about 34074.8763754177. The cubic root of 1161097200 is about 1051.0487480720.

Adding to 1161097200 its reverse (27901611), we get a palindrome (1188998811).

The spelling of 1161097200 in words is "one billion, one hundred sixty-one million, ninety-seven thousand, two hundred".