3781841 has 8 divisors (see below), whose sum is σ = 4395840. Its totient is φ = 3186288.

The previous prime is 3781829. The next prime is 3781849. The reversal of 3781841 is 1481873.

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

It is not a de Polignac number, because 3781841 - 2⁶ = 3781777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3781798 and 3781807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4166 + ... + 4991.

It is an arithmetic number, because the mean of its divisors is an integer number (549480).

Almost surely, 2^3781841 is an apocalyptic number.

It is an amenable number.

3781841 is a deficient number, since it is larger than the sum of its proper divisors (613999).

3781841 is an equidigital number, since it uses as much as digits as its factorization.

3781841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9223.

The product of its digits is 5376, while the sum is 32.

The square root of 3781841 is about 1944.6956060011. The cubic root of 3781841 is about 155.8001083204.

Adding to 3781841 its sum of digits (32), we get a palindrome (3781873).

Subtracting from 3781841 its reverse (1481873), we obtain a cube (2299968 = 132³).

The spelling of 3781841 in words is "three million, seven hundred eighty-one thousand, eight hundred forty-one".