239493763161 has 9 divisors (see below), whose sum is σ = 345937556341. Its totient is φ = 159661530012.

The previous prime is 239493763141. The next prime is 239493763213. The reversal of 239493763161 is 161367394932.

The square root of 239493763161 is 489381.

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

239493763161 is a `hidden beast` number, since 2 + 39 + 493 + 7 + 63 + 1 + 61 = 666.

239493763161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 239493763161 - 2¹⁵ = 239493730393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 239493763098 and 239493763107.

It is not an unprimeable number, because it can be changed into a prime (239493763141) 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 8 ways as a sum of consecutive naturals, for example, 1386580 + ... + 1549706.

Almost surely, 2^239493763161 is an apocalyptic number.

239493763161 is the 489381-st square number.

239493763161 is the 244691-st centered octagonal number.

It is an amenable number.

239493763161 is a deficient number, since it is larger than the sum of its proper divisors (106443793180).

239493763161 is an frugal number, since it uses more digits than its factorization.

239493763161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326260 (or 163130 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 54.

The spelling of 239493763161 in words is "two hundred thirty-nine billion, four hundred ninety-three million, seven hundred sixty-three thousand, one hundred sixty-one".