3812381 has 2 divisors, whose sum is σ = 3812382. Its totient is φ = 3812380.

The previous prime is 3812371. The next prime is 3812383. The reversal of 3812381 is 1832183.

3812381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3644281 + 168100 = 1909^2 + 410^2 .

It is an emirp because it is prime and its reverse (1832183) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3812381 is a prime.

It is a super-2 number, since 2×3812381² = 29068497778322, which contains 22 as substring.

Together with 3812383, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 3812381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3812383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1906190 + 1906191.

It is an arithmetic number, because the mean of its divisors is an integer number (1906191).

Almost surely, 2^3812381 is an apocalyptic number.

It is an amenable number.

3812381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3812381 is an equidigital number, since it uses as much as digits as its factorization.

3812381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 26.

The square root of 3812381 is about 1952.5319459614. The cubic root of 3812381 is about 156.2183688504.

The spelling of 3812381 in words is "three million, eight hundred twelve thousand, three hundred eighty-one".