9538784161 has 2 divisors, whose sum is σ = 9538784162. Its totient is φ = 9538784160.

The previous prime is 9538784117. The next prime is 9538784173. The reversal of 9538784161 is 1614878359.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7489863936 + 2048920225 = 86544^2 + 45265^2 .

It is a cyclic number.

It is not a de Polignac number, because 9538784161 - 2²¹ = 9536687009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9538784099 and 9538784108.

It is not a weakly prime, because it can be changed into another prime (9538784261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4769392080 + 4769392081.

It is an arithmetic number, because the mean of its divisors is an integer number (4769392081).

Almost surely, 2^9538784161 is an apocalyptic number.

It is an amenable number.

9538784161 is a deficient number, since it is larger than the sum of its proper divisors (1).

9538784161 is an equidigital number, since it uses as much as digits as its factorization.

9538784161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 52.

The square root of 9538784161 is about 97666.6993452733. The cubic root of 9538784161 is about 2120.7900343306.

The spelling of 9538784161 in words is "nine billion, five hundred thirty-eight million, seven hundred eighty-four thousand, one hundred sixty-one".