3820819 has 4 divisors (see below), whose sum is σ = 3835944. Its totient is φ = 3805696.

The previous prime is 3820813. The next prime is 3820841. The reversal of 3820819 is 9180283.

3820819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3820819 - 2³ = 3820811 is a prime.

It is a super-2 number, since 2×3820819² = 29197315661522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3820811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7177 + ... + 7690.

It is an arithmetic number, because the mean of its divisors is an integer number (958986).

Almost surely, 2^3820819 is an apocalyptic number.

3820819 is a deficient number, since it is larger than the sum of its proper divisors (15125).

3820819 is a wasteful number, since it uses less digits than its factorization.

3820819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15124.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 3820819 is about 1954.6915357672. The cubic root of 3820819 is about 156.3335374096. Note that the first 3 decimals are identical.

The spelling of 3820819 in words is "three million, eight hundred twenty thousand, eight hundred nineteen".