3703813 has 4 divisors (see below), whose sum is σ = 3716748. Its totient is φ = 3690880.

The previous prime is 3703781. The next prime is 3703823. The reversal of 3703813 is 3183073.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3183073 = 37 ⋅86029.

It can be written as a sum of positive squares in 2 ways, for example, as 1444804 + 2259009 = 1202^2 + 1503^2 .

It is a cyclic number.

It is not a de Polignac number, because 3703813 - 2⁵ = 3703781 is a prime.

It is a Duffinian number.

3703813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3703823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6028 + ... + 6613.

It is an arithmetic number, because the mean of its divisors is an integer number (929187).

Almost surely, 2^3703813 is an apocalyptic number.

It is an amenable number.

3703813 is a deficient number, since it is larger than the sum of its proper divisors (12935).

3703813 is a wasteful number, since it uses less digits than its factorization.

3703813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12934.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 3703813 is about 1924.5292931000. The cubic root of 3703813 is about 154.7211496975.

Adding to 3703813 its reverse (3183073), we get a palindrome (6886886).

The spelling of 3703813 in words is "three million, seven hundred three thousand, eight hundred thirteen".