2180819 has 8 divisors (see below), whose sum is σ = 2276352. Its totient is φ = 2086920.

The previous prime is 2180813. The next prime is 2180833. The reversal of 2180819 is 9180812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2180819 - 2⁴ = 2180803 is a prime.

It is a super-2 number, since 2×2180819² = 9511943021522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2180791 and 2180800.

It is not an unprimeable number, because it can be changed into a prime (2180813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2852 + ... + 3534.

It is an arithmetic number, because the mean of its divisors is an integer number (284544).

2^2180819 is an apocalyptic number.

2180819 is a deficient number, since it is larger than the sum of its proper divisors (95533).

2180819 is a wasteful number, since it uses less digits than its factorization.

2180819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 2180819 is about 1476.7596283756. The cubic root of 2180819 is about 129.6800613820.

The spelling of 2180819 in words is "two million, one hundred eighty thousand, eight hundred nineteen".