1868219 has 4 divisors (see below), whose sum is σ = 1871160. Its totient is φ = 1865280.

The previous prime is 1868201. The next prime is 1868231. The reversal of 1868219 is 9128681.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1868219 - 2¹⁶ = 1802683 is a prime.

It is a super-2 number, since 2×1868219² = 6980484463922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1868239) 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, 77 + ... + 1934.

It is an arithmetic number, because the mean of its divisors is an integer number (467790).

2^1868219 is an apocalyptic number.

1868219 is a deficient number, since it is larger than the sum of its proper divisors (2941).

1868219 is an equidigital number, since it uses as much as digits as its factorization.

1868219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940.

The product of its digits is 6912, while the sum is 35.

The square root of 1868219 is about 1366.8280798989. The cubic root of 1868219 is about 123.1617718507.

The spelling of 1868219 in words is "one million, eight hundred sixty-eight thousand, two hundred nineteen".