8975438918389 has 2 divisors, whose sum is σ = 8975438918390. Its totient is φ = 8975438918388.

The previous prime is 8975438918377. The next prime is 8975438918419. The reversal of 8975438918389 is 9838198345798.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6416382831364 + 2559056087025 = 2533058^2 + 1599705^2 .

It is a cyclic number.

It is not a de Polignac number, because 8975438918389 - 2⁹ = 8975438917877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8975438918189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4487719459194 + 4487719459195.

It is an arithmetic number, because the mean of its divisors is an integer number (4487719459195).

Almost surely, 2^{8975438918389} is an apocalyptic number.

It is an amenable number.

8975438918389 is a deficient number, since it is larger than the sum of its proper divisors (1).

8975438918389 is an equidigital number, since it uses as much as digits as its factorization.

8975438918389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3762339840, while the sum is 82.

The spelling of 8975438918389 in words is "eight trillion, nine hundred seventy-five billion, four hundred thirty-eight million, nine hundred eighteen thousand, three hundred eighty-nine".