9381958609 has 2 divisors, whose sum is σ = 9381958610. Its totient is φ = 9381958608.

The previous prime is 9381958603. The next prime is 9381958667. The reversal of 9381958609 is 9068591839.

It is an a-pointer prime, because the next prime (9381958667) can be obtained adding 9381958609 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8330577984 + 1051380625 = 91272^2 + 32425^2 .

It is a cyclic number.

It is not a de Polignac number, because 9381958609 - 2³ = 9381958601 is a prime.

It is a super-2 number, since 2×9381958609² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9381958601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4690979304 + 4690979305.

It is an arithmetic number, because the mean of its divisors is an integer number (4690979305).

Almost surely, 2^9381958609 is an apocalyptic number.

It is an amenable number.

9381958609 is a deficient number, since it is larger than the sum of its proper divisors (1).

9381958609 is an equidigital number, since it uses as much as digits as its factorization.

9381958609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 58.

The square root of 9381958609 is about 96860.5110919822. The cubic root of 9381958609 is about 2109.1032336200.

The spelling of 9381958609 in words is "nine billion, three hundred eighty-one million, nine hundred fifty-eight thousand, six hundred nine".