1161423168 has 28 divisors (see below), whose sum is σ = 3072932640. Its totient is φ = 387140992.

The previous prime is 1161423143. The next prime is 1161423169. The reversal of 1161423168 is 8613241611.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161423169) 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 3 ways as a sum of consecutive naturals, for example, 3024348 + ... + 3024731.

Almost surely, 2^1161423168 is an apocalyptic number.

It is an amenable number.

1161423168 is an abundant number, since it is smaller than the sum of its proper divisors (1911509472).

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

1161423168 is an equidigital number, since it uses as much as digits as its factorization.

1161423168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6049094 (or 6049084 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 1161423168 is about 34079.6591532251. The cubic root of 1161423168 is about 1051.1470964853.

Adding to 1161423168 its reverse (8613241611), we get a palindrome (9774664779).

The spelling of 1161423168 in words is "one billion, one hundred sixty-one million, four hundred twenty-three thousand, one hundred sixty-eight".