9864660913 has 2 divisors, whose sum is σ = 9864660914. Its totient is φ = 9864660912.

The previous prime is 9864660899. The next prime is 9864660959. The reversal of 9864660913 is 3190664689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9862873344 + 1787569 = 99312^2 + 1337^2 .

It is a cyclic number.

It is not a de Polignac number, because 9864660913 - 2²¹ = 9862563761 is a prime.

It is not a weakly prime, because it can be changed into another prime (9864660713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4932330456 + 4932330457.

It is an arithmetic number, because the mean of its divisors is an integer number (4932330457).

Almost surely, 2^9864660913 is an apocalyptic number.

It is an amenable number.

9864660913 is a deficient number, since it is larger than the sum of its proper divisors (1).

9864660913 is an equidigital number, since it uses as much as digits as its factorization.

9864660913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The square root of 9864660913 is about 99320.9993556247. Note that the first 3 decimals coincide. The cubic root of 9864660913 is about 2144.6712031460.

The spelling of 9864660913 in words is "nine billion, eight hundred sixty-four million, six hundred sixty thousand, nine hundred thirteen".