1161173968 has 10 divisors (see below), whose sum is σ = 2249774594. Its totient is φ = 580586976.

The previous prime is 1161173957. The next prime is 1161173969. The reversal of 1161173968 is 8693711611.

It can be written as a sum of positive squares in only one way, i.e., 651678784 + 509495184 = 25528^2 + 22572^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161173969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36286671 + ... + 36286702.

Almost surely, 2^1161173968 is an apocalyptic number.

It is an amenable number.

1161173968 is a deficient number, since it is larger than the sum of its proper divisors (1088600626).

1161173968 is an equidigital number, since it uses as much as digits as its factorization.

1161173968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72573381 (or 72573375 counting only the distinct ones).

The product of its digits is 54432, while the sum is 43.

The square root of 1161173968 is about 34076.0028172320. The cubic root of 1161173968 is about 1051.0719115453.

The spelling of 1161173968 in words is "one billion, one hundred sixty-one million, one hundred seventy-three thousand, nine hundred sixty-eight".