3820165 has 8 divisors (see below), whose sum is σ = 4600728. Its totient is φ = 3045120.

The previous prime is 3820153. The next prime is 3820171. The reversal of 3820165 is 5610283.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 263169 + 3556996 = 513^2 + 1886^2 .

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

It is not a de Polignac number, because 3820165 - 2⁵ = 3820133 is a prime.

It is a Duffinian number.

3820165 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345 + ... + 2785.

It is an arithmetic number, because the mean of its divisors is an integer number (575091).

Almost surely, 2^3820165 is an apocalyptic number.

It is an amenable number.

3820165 is a deficient number, since it is larger than the sum of its proper divisors (780563).

3820165 is a wasteful number, since it uses less digits than its factorization.

3820165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 3820165 is about 1954.5242387855. The cubic root of 3820165 is about 156.3246171609.

The spelling of 3820165 in words is "three million, eight hundred twenty thousand, one hundred sixty-five".