2201819 has 4 divisors (see below), whose sum is σ = 2208096. Its totient is φ = 2195544.

The previous prime is 2201807. The next prime is 2201827. The reversal of 2201819 is 9181022.

2201819 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 a de Polignac number, because none of the positive numbers 2^k-2201819 is a prime.

It is a super-2 number, since 2×2201819² = 9696013817522, 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 = 2201794 and 2201803.

It is not an unprimeable number, because it can be changed into a prime (2201839) 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, 2579 + ... + 3324.

It is an arithmetic number, because the mean of its divisors is an integer number (552024).

2^2201819 is an apocalyptic number.

2201819 is a deficient number, since it is larger than the sum of its proper divisors (6277).

2201819 is an equidigital number, since it uses as much as digits as its factorization.

2201819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6276.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 2201819 is about 1483.8527554983. The cubic root of 2201819 is about 130.0949798991.

The spelling of 2201819 in words is "two million, two hundred one thousand, eight hundred nineteen".