9664864291 has 2 divisors, whose sum is σ = 9664864292. Its totient is φ = 9664864290.

The previous prime is 9664864271. The next prime is 9664864303. The reversal of 9664864291 is 1924684669.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9664864291 - 2¹⁹ = 9664340003 is a prime.

It is a super-3 number, since 3×9664864291³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (9664864241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4832432145 + 4832432146.

It is an arithmetic number, because the mean of its divisors is an integer number (4832432146).

Almost surely, 2^9664864291 is an apocalyptic number.

9664864291 is a deficient number, since it is larger than the sum of its proper divisors (1).

9664864291 is an equidigital number, since it uses as much as digits as its factorization.

9664864291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 55.

The square root of 9664864291 is about 98310.0416590289. The cubic root of 9664864291 is about 2130.0931058363.

The spelling of 9664864291 in words is "nine billion, six hundred sixty-four million, eight hundred sixty-four thousand, two hundred ninety-one".