181045144036 has 27 divisors (see below), whose sum is σ = 321009462921. Its totient is φ = 89343528144.

The previous prime is 181045144009. The next prime is 181045144039. The reversal of 181045144036 is 630441540181.

The square root of 181045144036 is 425494.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 74283502500 + 106761641536 = 272550^2 + 326744^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 181045143986 and 181045144004.

It is not an unprimeable number, because it can be changed into a prime (181045144039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 67226706 + ... + 67229398.

Almost surely, 2^181045144036 is an apocalyptic number.

181045144036 is the 425494-th square number.

It is an amenable number.

181045144036 is a deficient number, since it is larger than the sum of its proper divisors (139964318885).

181045144036 is an frugal number, since it uses more digits than its factorization.

181045144036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5548 (or 2774 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 181045144036 in words is "one hundred eighty-one billion, forty-five million, one hundred forty-four thousand, thirty-six".