3543813 has 24 divisors (see below), whose sum is σ = 6301568. Its totient is φ = 1868832.

The previous prime is 3543811. The next prime is 3543821. The reversal of 3543813 is 3183453.

It is a happy number.

It is not a de Polignac number, because 3543813 - 2¹ = 3543811 is a prime.

It is a super-2 number, since 2×3543813² = 25117221157938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3543811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1345 + ... + 2982.

Almost surely, 2^3543813 is an apocalyptic number.

It is an amenable number.

3543813 is a deficient number, since it is larger than the sum of its proper divisors (2757755).

3543813 is a wasteful number, since it uses less digits than its factorization.

3543813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353 (or 4350 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 3543813 is about 1882.5017928278. The cubic root of 3543813 is about 152.4603569803.

It can be divided in two parts, 3543 and 813, that added together give a square (4356 = 66²).

The spelling of 3543813 in words is "three million, five hundred forty-three thousand, eight hundred thirteen".