9809632465 has 16 divisors (see below), whose sum is σ = 12001521168. Its totient is φ = 7694592256.

The previous prime is 9809632453. The next prime is 9809632487. The reversal of 9809632465 is 5642369089.

It can be written as a sum of positive squares in 8 ways, for example, as 823919616 + 8985712849 = 28704^2 + 94793^2 .

It is a cyclic number.

It is not a de Polignac number, because 9809632465 - 2⁵ = 9809632433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422499 + ... + 445111.

It is an arithmetic number, because the mean of its divisors is an integer number (750095073).

Almost surely, 2^9809632465 is an apocalyptic number.

It is an amenable number.

9809632465 is a deficient number, since it is larger than the sum of its proper divisors (2191888703).

9809632465 is a wasteful number, since it uses less digits than its factorization.

9809632465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24308.

The product of its (nonzero) digits is 2799360, while the sum is 52.

The square root of 9809632465 is about 99043.5887122433. The cubic root of 9809632465 is about 2140.6758619460.

The spelling of 9809632465 in words is "nine billion, eight hundred nine million, six hundred thirty-two thousand, four hundred sixty-five".