181529453828 has 12 divisors (see below), whose sum is σ = 317687791680. Its totient is φ = 90761513352.

The previous prime is 181529453821. The next prime is 181529453851. The reversal of 181529453828 is 828354925181.

181529453828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (181529453821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673976 + ... + 904047.

It is an arithmetic number, because the mean of its divisors is an integer number (26473982640).

Almost surely, 2^181529453828 is an apocalyptic number.

It is an amenable number.

181529453828 is a deficient number, since it is larger than the sum of its proper divisors (136158337852).

181529453828 is a wasteful number, since it uses less digits than its factorization.

181529453828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606786 (or 1606784 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 56.

The spelling of 181529453828 in words is "one hundred eighty-one billion, five hundred twenty-nine million, four hundred fifty-three thousand, eight hundred twenty-eight".