181163424 has 96 divisors (see below), whose sum is σ = 542324160. Its totient is φ = 52457472.

The previous prime is 181163419. The next prime is 181163459. The reversal of 181163424 is 424361181.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a junction number, because it is equal to n+sod(n) for n = 181163391 and 181163400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16947 + ... + 25485.

It is an arithmetic number, because the mean of its divisors is an integer number (5649210).

Almost surely, 2^181163424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181163424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271162080).

181163424 is an abundant number, since it is smaller than the sum of its proper divisors (361160736).

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

181163424 is a wasteful number, since it uses less digits than its factorization.

181163424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8582 (or 8574 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 181163424 is about 13459.6962818631. The cubic root of 181163424 is about 565.8354768270.

The spelling of 181163424 in words is "one hundred eighty-one million, one hundred sixty-three thousand, four hundred twenty-four".