3813811 has 2 divisors, whose sum is σ = 3813812. Its totient is φ = 3813810.

The previous prime is 3813773. The next prime is 3813847. The reversal of 3813811 is 1183183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3813811 - 2¹¹ = 3811763 is a prime.

It is not a weakly prime, because it can be changed into another prime (3813871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1906905 + 1906906.

It is an arithmetic number, because the mean of its divisors is an integer number (1906906).

Almost surely, 2^3813811 is an apocalyptic number.

3813811 is a deficient number, since it is larger than the sum of its proper divisors (1).

3813811 is an equidigital number, since it uses as much as digits as its factorization.

3813811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 25.

The square root of 3813811 is about 1952.8981028205. The cubic root of 3813811 is about 156.2378985828.

Adding to 3813811 its reverse (1183183), we get a palindrome (4996994).

It can be divided in two parts, 3813 and 811, that added together give a square (4624 = 68²).

The spelling of 3813811 in words is "three million, eight hundred thirteen thousand, eight hundred eleven".