1161160172 has 24 divisors (see below), whose sum is σ = 2047924032. Its totient is φ = 576057600.

The previous prime is 1161160171. The next prime is 1161160177. The reversal of 1161160172 is 2710611611.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1161160171) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 280397 + ... + 284507.

It is an arithmetic number, because the mean of its divisors is an integer number (85330168).

Almost surely, 2^1161160172 is an apocalyptic number.

It is an amenable number.

1161160172 is a deficient number, since it is larger than the sum of its proper divisors (886763860).

1161160172 is a wasteful number, since it uses less digits than its factorization.

1161160172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649 (or 4647 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1161160172 is about 34075.8003867848. The cubic root of 1161160172 is about 1051.0677489059.

Adding to 1161160172 its reverse (2710611611), we get a palindrome (3871771783).

The spelling of 1161160172 in words is "one billion, one hundred sixty-one million, one hundred sixty thousand, one hundred seventy-two".