3816213 has 4 divisors (see below), whose sum is σ = 5088288. Its totient is φ = 2544140.

The previous prime is 3816203. The next prime is 3816233. The reversal of 3816213 is 3126183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3816213 - 2⁶ = 3816149 is a prime.

It is a super-2 number, since 2×3816213² = 29126963322738, which contains 22 as substring.

It is a D-number.

3816213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3816203) 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, 636033 + ... + 636038.

It is an arithmetic number, because the mean of its divisors is an integer number (1272072).

Almost surely, 2^3816213 is an apocalyptic number.

It is an amenable number.

3816213 is a deficient number, since it is larger than the sum of its proper divisors (1272075).

3816213 is a wasteful number, since it uses less digits than its factorization.

3816213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272074.

The product of its digits is 864, while the sum is 24.

The square root of 3816213 is about 1953.5129894628. The cubic root of 3816213 is about 156.2706920863.

The spelling of 3816213 in words is "three million, eight hundred sixteen thousand, two hundred thirteen".