181330048 has 16 divisors (see below), whose sum is σ = 361243710. Its totient is φ = 90664960.

The previous prime is 181330001. The next prime is 181330057. The reversal of 181330048 is 840033181.

It can be written as a sum of positive squares in only one way, i.e., 148060224 + 33269824 = 12168^2 + 5768^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 181329998 and 181330025.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 708193 + ... + 708448.

Almost surely, 2^181330048 is an apocalyptic number.

It is an amenable number.

181330048 is a deficient number, since it is larger than the sum of its proper divisors (179913662).

181330048 is an equidigital number, since it uses as much as digits as its factorization.

181330048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416655 (or 1416643 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 181330048 is about 13465.8845977529. The cubic root of 181330048 is about 566.0088982939.

The spelling of 181330048 in words is "one hundred eighty-one million, three hundred thirty thousand, forty-eight".