493178939289 has 9 divisors (see below), whose sum is σ = 712372622143. Its totient is φ = 328784554992.

The previous prime is 493178939249. The next prime is 493178939299. The reversal of 493178939289 is 982939871394.

The square root of 493178939289 is 702267.

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

493178939289 is a `hidden beast` number, since 4 + 93 + 1 + 78 + 9 + 392 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 424430099289 + 68748840000 = 651483^2 + 262200^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 493178939289 - 2¹⁹ = 493178415001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (493178939249) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1989757 + ... + 2223845.

Almost surely, 2^493178939289 is an apocalyptic number.

493178939289 is the 702267-th square number.

493178939289 is the 351134-th centered octagonal number.

It is an amenable number.

493178939289 is a deficient number, since it is larger than the sum of its proper divisors (219193682854).

493178939289 is an frugal number, since it uses more digits than its factorization.

493178939289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468184 (or 234092 counting only the distinct ones).

The product of its digits is 211631616, while the sum is 72.

The spelling of 493178939289 in words is "four hundred ninety-three billion, one hundred seventy-eight million, nine hundred thirty-nine thousand, two hundred eighty-nine".