9731495161 has 2 divisors, whose sum is σ = 9731495162. Its totient is φ = 9731495160.

The previous prime is 9731495153. The next prime is 9731495197. The reversal of 9731495161 is 1615941379.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7452005625 + 2279489536 = 86325^2 + 47744^2 .

It is a cyclic number.

It is not a de Polignac number, because 9731495161 - 2³ = 9731495153 is a prime.

It is not a weakly prime, because it can be changed into another prime (9731495131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4865747580 + 4865747581.

It is an arithmetic number, because the mean of its divisors is an integer number (4865747581).

Almost surely, 2^9731495161 is an apocalyptic number.

It is an amenable number.

9731495161 is a deficient number, since it is larger than the sum of its proper divisors (1).

9731495161 is an equidigital number, since it uses as much as digits as its factorization.

9731495161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 46.

The square root of 9731495161 is about 98648.3408932963. The cubic root of 9731495161 is about 2134.9769488194.

The spelling of 9731495161 in words is "nine billion, seven hundred thirty-one million, four hundred ninety-five thousand, one hundred sixty-one".