19746713529 has 27 divisors (see below), whose sum is σ = 29492327397. Its totient is φ = 12731383800.

The previous prime is 19746713479. The next prime is 19746713531. The reversal of 19746713529 is 92531764791.

The square root of 19746713529 is 140523.

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

19746713529 is a `hidden beast` number, since 1 + 9 + 7 + 46 + 71 + 3 + 529 = 666.

It is not a de Polignac number, because 19746713529 - 2⁷ = 19746713401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19746711529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13067884 + ... + 13069394.

Almost surely, 2^19746713529 is an apocalyptic number.

19746713529 is the 140523-rd square number.

19746713529 is the 70262-nd centered octagonal number.

It is an amenable number.

19746713529 is a deficient number, since it is larger than the sum of its proper divisors (9745613868).

19746713529 is an frugal number, since it uses more digits than its factorization.

19746713529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090 (or 1545 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The spelling of 19746713529 in words is "nineteen billion, seven hundred forty-six million, seven hundred thirteen thousand, five hundred twenty-nine".