2043819 has 16 divisors (see below), whose sum is σ = 3081600. Its totient is φ = 1338408.

The previous prime is 2043817. The next prime is 2043841. The reversal of 2043819 is 9183402.

It is not a de Polignac number, because 2043819 - 2¹ = 2043817 is a prime.

It is a super-2 number, since 2×2043819² = 8354392209522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

2043819 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2043792 and 2043801.

It is not an unprimeable number, because it can be changed into a prime (2043817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 952 + ... + 2234.

It is an arithmetic number, because the mean of its divisors is an integer number (192600).

2^2043819 is an apocalyptic number.

2043819 is a deficient number, since it is larger than the sum of its proper divisors (1037781).

2043819 is a wasteful number, since it uses less digits than its factorization.

2043819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351 (or 1345 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2043819 is about 1429.6219780068. The cubic root of 2043819 is about 126.9056070043.

The spelling of 2043819 in words is "two million, forty-three thousand, eight hundred nineteen".