11841965 has 4 divisors (see below), whose sum is σ = 14210364. Its totient is φ = 9473568.

The previous prime is 11841943. The next prime is 11841971. The reversal of 11841965 is 56914811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56914811 = 23 ⋅2474557.

It can be written as a sum of positive squares in 2 ways, for example, as 7300804 + 4541161 = 2702^2 + 2131^2 .

It is a cyclic number.

It is not a de Polignac number, because 11841965 - 2¹² = 11837869 is a prime.

It is a super-2 number, since 2×11841965² = 280464270122450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1184192 + ... + 1184201.

It is an arithmetic number, because the mean of its divisors is an integer number (3552591).

Almost surely, 2^11841965 is an apocalyptic number.

It is an amenable number.

11841965 is a deficient number, since it is larger than the sum of its proper divisors (2368399).

11841965 is an equidigital number, since it uses as much as digits as its factorization.

11841965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368398.

The product of its digits is 8640, while the sum is 35.

The square root of 11841965 is about 3441.2156282337. The cubic root of 11841965 is about 227.9333767073.

The spelling of 11841965 in words is "eleven million, eight hundred forty-one thousand, nine hundred sixty-five".