3861165 has 32 divisors (see below), whose sum is σ = 7704576. Its totient is φ = 1604160.

The previous prime is 3861119. The next prime is 3861167. The reversal of 3861165 is 5611683.

It is not a de Polignac number, because 3861165 - 2¹³ = 3852973 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

3861165 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 517 + ... + 2826.

It is an arithmetic number, because the mean of its divisors is an integer number (240768).

Almost surely, 2^3861165 is an apocalyptic number.

3861165 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3861165 is a deficient number, since it is larger than the sum of its proper divisors (3843411).

3861165 is a wasteful number, since it uses less digits than its factorization.

3861165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369.

The product of its digits is 4320, while the sum is 30.

The square root of 3861165 is about 1964.9847327651. The cubic root of 3861165 is about 156.8818806736.

It can be divided in two parts, 386 and 1165, that added together give a palindrome (1551).

The spelling of 3861165 in words is "three million, eight hundred sixty-one thousand, one hundred sixty-five".