9664365919 has 8 divisors (see below), whose sum is σ = 10409933072. Its totient is φ = 8919106560.

The previous prime is 9664365901. The next prime is 9664365937. The reversal of 9664365919 is 9195634669.

It is an interprime number because it is at equal distance from previous prime (9664365901) and next prime (9664365937).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9664365919 - 2⁹ = 9664365407 is a prime.

It is a super-2 number, since 2×9664365919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9664360919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9537 + ... + 139354.

It is an arithmetic number, because the mean of its divisors is an integer number (1301241634).

Almost surely, 2^9664365919 is an apocalyptic number.

9664365919 is a deficient number, since it is larger than the sum of its proper divisors (745567153).

9664365919 is a wasteful number, since it uses less digits than its factorization.

9664365919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153897.

The product of its digits is 9447840, while the sum is 58.

The square root of 9664365919 is about 98307.5069310579. The cubic root of 9664365919 is about 2130.0564922162.

The spelling of 9664365919 in words is "nine billion, six hundred sixty-four million, three hundred sixty-five thousand, nine hundred nineteen".