181943196304 has 15 divisors (see below), whose sum is σ = 352518248617. Its totient is φ = 90970745056.

The previous prime is 181943196301. The next prime is 181943196313. The reversal of 181943196304 is 403691349181.

The square root of 181943196304 is 426548.

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., 179487795600 + 2455400704 = 423660^2 + 49552^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181943196301) 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 2 ways as a sum of consecutive naturals, for example, 1652874 + ... + 1759510.

Almost surely, 2^181943196304 is an apocalyptic number.

181943196304 is the 426548-th square number.

It is an amenable number.

181943196304 is a deficient number, since it is larger than the sum of its proper divisors (170575052313).

181943196304 is an frugal number, since it uses more digits than its factorization.

181943196304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213282 (or 106639 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

Multiplying 181943196304 by its sum of digits (49), we get a square (8915216618896 = 2985836²).

The spelling of 181943196304 in words is "one hundred eighty-one billion, nine hundred forty-three million, one hundred ninety-six thousand, three hundred four".