3813895 has 4 divisors (see below), whose sum is σ = 4576680. Its totient is φ = 3051112.

The previous prime is 3813893. The next prime is 3813913. The reversal of 3813895 is 5983183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3813895 - 2¹ = 3813893 is a prime.

3813895 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3813893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381385 + ... + 381394.

It is an arithmetic number, because the mean of its divisors is an integer number (1144170).

Almost surely, 2^3813895 is an apocalyptic number.

3813895 is a deficient number, since it is larger than the sum of its proper divisors (762785).

3813895 is an equidigital number, since it uses as much as digits as its factorization.

3813895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762784.

The product of its digits is 25920, while the sum is 37.

The square root of 3813895 is about 1952.9196092005. The cubic root of 3813895 is about 156.2390456320.

The spelling of 3813895 in words is "three million, eight hundred thirteen thousand, eight hundred ninety-five".