11808965 has 32 divisors (see below), whose sum is σ = 17418240. Its totient is φ = 7501824.

The previous prime is 11808947. The next prime is 11808977. The reversal of 11808965 is 56980811.

11808965 = T₄₇₀ + T₄₇₁ + ... + T₅₅₈.

It is a cyclic number.

It is not a de Polignac number, because 11808965 - 2¹⁰ = 11807941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52844 + ... + 53066.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

Almost surely, 2^11808965 is an apocalyptic number.

It is an amenable number.

11808965 is a deficient number, since it is larger than the sum of its proper divisors (5609275).

11808965 is a wasteful number, since it uses less digits than its factorization.

11808965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 11808965 is about 3436.4174659084. The cubic root of 11808965 is about 227.7214524399.

The spelling of 11808965 in words is "eleven million, eight hundred eight thousand, nine hundred sixty-five".