19239373285441 has 3 divisors (see below), whose sum is σ = 19239377671713. Its totient is φ = 19239368899170.

The previous prime is 19239373285361. The next prime is 19239373285463. The reversal of 19239373285441 is 14458237393291.

The square root of 19239373285441 is 4386271.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 19239373285441 - 2¹³ = 19239373277249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19239373285441.

It is not an unprimeable number, because it can be changed into a prime (19239373285141) 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, 2193136 + ... + 6579406.

It is an arithmetic number, because the mean of its divisors is an integer number (6413125890571).

Almost surely, 2^{19239373285441} is an apocalyptic number.

19239373285441 is the 4386271-st square number.

19239373285441 is the 2193136-th centered octagonal number.

It is an amenable number.

19239373285441 is a deficient number, since it is larger than the sum of its proper divisors (4386272).

19239373285441 is an frugal number, since it uses more digits than its factorization.

19239373285441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772542 (or 4386271 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 61.

The spelling of 19239373285441 in words is "nineteen trillion, two hundred thirty-nine billion, three hundred seventy-three million, two hundred eighty-five thousand, four hundred forty-one".