3681819 has 12 divisors (see below), whose sum is σ = 5339256. Its totient is φ = 2444832.

The previous prime is 3681793. The next prime is 3681823. The reversal of 3681819 is 9181863.

3681819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3681819 - 2⁵ = 3681787 is a prime.

It is a super-2 number, since 2×3681819² = 27111582297522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3681889) 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 11 ways as a sum of consecutive naturals, for example, 2164 + ... + 3470.

It is an arithmetic number, because the mean of its divisors is an integer number (444938).

Almost surely, 2^3681819 is an apocalyptic number.

3681819 is a deficient number, since it is larger than the sum of its proper divisors (1657437).

3681819 is a wasteful number, since it uses less digits than its factorization.

3681819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626 (or 1623 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 3681819 is about 1918.8066604012. The cubic root of 3681819 is about 154.4142861981.

It can be divided in two parts, 368 and 1819, that added together give a 7-th power (2187 = 3⁷).

The spelling of 3681819 in words is "three million, six hundred eighty-one thousand, eight hundred nineteen".