19792186243281 has 27 divisors (see below), whose sum is σ = 29541296487963. Its totient is φ = 12768885484560.

The previous prime is 19792186243237. The next prime is 19792186243303. The reversal of 19792186243281 is 18234268129791.

The square root of 19792186243281 is 4448841.

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

19792186243281 is a `hidden beast` number, since 1 + 9 + 79 + 218 + 6 + 24 + 328 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6509922617025 + 13282263626256 = 2551455^2 + 3644484^2 .

It is not a de Polignac number, because 19792186243281 - 2³⁹ = 19242430429393 is a prime.

It is a super-2 number, since 2×19792186243281² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19792186043281) 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 26 ways as a sum of consecutive naturals, for example, 413718295 + ... + 413766131.

Almost surely, 2^{19792186243281} is an apocalyptic number.

19792186243281 is the 4448841-st square number.

19792186243281 is the 2224421-st centered octagonal number.

It is an amenable number.

19792186243281 is a deficient number, since it is larger than the sum of its proper divisors (9749110244682).

19792186243281 is an frugal number, since it uses more digits than its factorization.

19792186243281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95742 (or 47871 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The spelling of 19792186243281 in words is "nineteen trillion, seven hundred ninety-two billion, one hundred eighty-six million, two hundred forty-three thousand, two hundred eighty-one".