19214219 has 4 divisors (see below), whose sum is σ = 19272600. Its totient is φ = 19155840.

The previous prime is 19214213. The next prime is 19214231. The reversal of 19214219 is 91241291.

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 19214219 - 2¹⁶ = 19148683 is a prime.

It is a super-2 number, since 2×19214219² = 738372423559922, 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 = 19214191 and 19214200.

It is not an unprimeable number, because it can be changed into a prime (19214213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28694 + ... + 29355.

It is an arithmetic number, because the mean of its divisors is an integer number (4818150).

Almost surely, 2^19214219 is an apocalyptic number.

19214219 is a deficient number, since it is larger than the sum of its proper divisors (58381).

19214219 is an equidigital number, since it uses as much as digits as its factorization.

19214219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58380.

The product of its digits is 1296, while the sum is 29.

The square root of 19214219 is about 4383.4026737228. The cubic root of 19214219 is about 267.8392655768.

The spelling of 19214219 in words is "nineteen million, two hundred fourteen thousand, two hundred nineteen".