9488891609 has 2 divisors, whose sum is σ = 9488891610. Its totient is φ = 9488891608.

The previous prime is 9488891603. The next prime is 9488891663. The reversal of 9488891609 is 9061988849.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6472685209 + 3016206400 = 80453^2 + 54920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9488891609 is a prime.

It is not a weakly prime, because it can be changed into another prime (9488891603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4744445804 + 4744445805.

It is an arithmetic number, because the mean of its divisors is an integer number (4744445805).

Almost surely, 2^9488891609 is an apocalyptic number.

It is an amenable number.

9488891609 is a deficient number, since it is larger than the sum of its proper divisors (1).

9488891609 is an equidigital number, since it uses as much as digits as its factorization.

9488891609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8957952, while the sum is 62.

The square root of 9488891609 is about 97410.9419367250. The cubic root of 9488891609 is about 2117.0859757005.

The spelling of 9488891609 in words is "nine billion, four hundred eighty-eight million, eight hundred ninety-one thousand, six hundred nine".