3781333 has 4 divisors (see below), whose sum is σ = 3795660. Its totient is φ = 3767008.

The previous prime is 3781313. The next prime is 3781367. The reversal of 3781333 is 3331873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3331873 = 107 ⋅31139.

It can be written as a sum of positive squares in 2 ways, for example, as 178929 + 3602404 = 423^2 + 1898^2 .

It is a cyclic number.

It is not a de Polignac number, because 3781333 - 2⁵ = 3781301 is a prime.

It is a Duffinian number.

3781333 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6760 + ... + 7297.

It is an arithmetic number, because the mean of its divisors is an integer number (948915).

Almost surely, 2^3781333 is an apocalyptic number.

It is an amenable number.

3781333 is a deficient number, since it is larger than the sum of its proper divisors (14327).

3781333 is a wasteful number, since it uses less digits than its factorization.

3781333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14326.

The product of its digits is 4536, while the sum is 28.

The square root of 3781333 is about 1944.5649899142. The cubic root of 3781333 is about 155.7931320004.

It can be divided in two parts, 3781 and 333, that added together give a palindrome (4114).

The spelling of 3781333 in words is "three million, seven hundred eighty-one thousand, three hundred thirty-three".