9538505189 has 2 divisors, whose sum is σ = 9538505190. Its totient is φ = 9538505188.

The previous prime is 9538505131. The next prime is 9538505219. The reversal of 9538505189 is 9815058359.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9306460900 + 232044289 = 96470^2 + 15233^2 .

It is an emirp because it is prime and its reverse (9815058359) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9538505189 - 2¹⁶ = 9538439653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9538505189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9508505189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4769252594 + 4769252595.

It is an arithmetic number, because the mean of its divisors is an integer number (4769252595).

Almost surely, 2^9538505189 is an apocalyptic number.

It is an amenable number.

9538505189 is a deficient number, since it is larger than the sum of its proper divisors (1).

9538505189 is an equidigital number, since it uses as much as digits as its factorization.

9538505189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944000, while the sum is 53.

The square root of 9538505189 is about 97665.2711510084. The cubic root of 9538505189 is about 2120.7693592007.

The spelling of 9538505189 in words is "nine billion, five hundred thirty-eight million, five hundred five thousand, one hundred eighty-nine".