1840219 has 2 divisors, whose sum is σ = 1840220. Its totient is φ = 1840218.

The previous prime is 1840183. The next prime is 1840231. The reversal of 1840219 is 9120481.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1840219 - 2¹⁹ = 1315931 is a prime.

It is a super-2 number, since 2×1840219² = 6772811935922, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1840193 and 1840202.

It is not a weakly prime, because it can be changed into another prime (1840259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920109 + 920110.

It is an arithmetic number, because the mean of its divisors is an integer number (920110).

2^1840219 is an apocalyptic number.

1840219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840219 is an equidigital number, since it uses as much as digits as its factorization.

1840219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1840219 is about 1356.5467186942. The cubic root of 1840219 is about 122.5433748940.

The spelling of 1840219 in words is "one million, eight hundred forty thousand, two hundred nineteen".