11920165 has 4 divisors (see below), whose sum is σ = 14304204. Its totient is φ = 9536128.

The previous prime is 11920157. The next prime is 11920199. The reversal of 11920165 is 56102911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56102911 = 23 ⋅2439257.

It can be written as a sum of positive squares in 2 ways, for example, as 7387524 + 4532641 = 2718^2 + 2129^2 .

It is a cyclic number.

It is not a de Polignac number, because 11920165 - 2³ = 11920157 is a prime.

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, 1192012 + ... + 1192021.

It is an arithmetic number, because the mean of its divisors is an integer number (3576051).

Almost surely, 2^11920165 is an apocalyptic number.

It is an amenable number.

11920165 is a deficient number, since it is larger than the sum of its proper divisors (2384039).

11920165 is an equidigital number, since it uses as much as digits as its factorization.

11920165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384038.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 11920165 is about 3452.5591957271. The cubic root of 11920165 is about 228.4340058433.

The spelling of 11920165 in words is "eleven million, nine hundred twenty thousand, one hundred sixty-five".