19021214 has 4 divisors (see below), whose sum is σ = 28531824. Its totient is φ = 9510606.

The previous prime is 19021199. The next prime is 19021271. The reversal of 19021214 is 41212091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41212091 = 47 ⋅876853.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4755302 + ... + 4755305.

It is an arithmetic number, because the mean of its divisors is an integer number (7132956).

Almost surely, 2^19021214 is an apocalyptic number.

19021214 is a deficient number, since it is larger than the sum of its proper divisors (9510610).

19021214 is an equidigital number, since it uses as much as digits as its factorization.

19021214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9510609.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 19021214 is about 4361.3316773664. The cubic root of 19021214 is about 266.9394392893.

The spelling of 19021214 in words is "nineteen million, twenty-one thousand, two hundred fourteen".