3743813 has 4 divisors (see below), whose sum is σ = 3872940. Its totient is φ = 3614688.

The previous prime is 3743797. The next prime is 3743837. The reversal of 3743813 is 3183473.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3183473 = 1327 ⋅2399.

It can be written as a sum of positive squares in 2 ways, for example, as 1532644 + 2211169 = 1238^2 + 1487^2 .

It is a cyclic number.

It is not a de Polignac number, because 3743813 - 2⁴ = 3743797 is a prime.

It is a super-2 number, since 2×3743813² = 28032271557938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 129097 = 3743813 / (3 + 7 + 4 + 3 + 8 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3743843) 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, 64520 + ... + 64577.

It is an arithmetic number, because the mean of its divisors is an integer number (968235).

Almost surely, 2^3743813 is an apocalyptic number.

It is an amenable number.

3743813 is a deficient number, since it is larger than the sum of its proper divisors (129127).

3743813 is a wasteful number, since it uses less digits than its factorization.

3743813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129126.

The product of its digits is 6048, while the sum is 29.

The square root of 3743813 is about 1934.8935371229. The cubic root of 3743813 is about 155.2761362763.

The spelling of 3743813 in words is "three million, seven hundred forty-three thousand, eight hundred thirteen".