181132868 has 12 divisors (see below), whose sum is σ = 362265792. Its totient is φ = 77628360.

The previous prime is 181132867. The next prime is 181132883. The reversal of 181132868 is 868231181.

181132868 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (181132867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3234488 + ... + 3234543.

It is an arithmetic number, because the mean of its divisors is an integer number (30188816).

Almost surely, 2^181132868 is an apocalyptic number.

It is an amenable number.

181132868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

181132868 is a wasteful number, since it uses less digits than its factorization.

181132868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6469042 (or 6469040 counting only the distinct ones).

The product of its digits is 18432, while the sum is 38.

The square root of 181132868 is about 13458.5611415188. The cubic root of 181132868 is about 565.8036627507.

The spelling of 181132868 in words is "one hundred eighty-one million, one hundred thirty-two thousand, eight hundred sixty-eight".