3701813 has 4 divisors (see below), whose sum is σ = 3801900. Its totient is φ = 3601728.

The previous prime is 3701809. The next prime is 3701839. The reversal of 3701813 is 3181073.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1385329 + 2316484 = 1177^2 + 1522^2 .

It is not a de Polignac number, because 3701813 - 2² = 3701809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3701213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49988 + ... + 50061.

It is an arithmetic number, because the mean of its divisors is an integer number (950475).

Almost surely, 2^3701813 is an apocalyptic number.

It is an amenable number.

3701813 is a deficient number, since it is larger than the sum of its proper divisors (100087).

3701813 is a wasteful number, since it uses less digits than its factorization.

3701813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100086.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 3701813 is about 1924.0096153606. The cubic root of 3701813 is about 154.6932956982.

Adding to 3701813 its reverse (3181073), we get a palindrome (6882886).

The spelling of 3701813 in words is "three million, seven hundred one thousand, eight hundred thirteen".