19422223 has 2 divisors, whose sum is σ = 19422224. Its totient is φ = 19422222.

The previous prime is 19422209. The next prime is 19422253. The reversal of 19422223 is 32222491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19422223 - 2⁹ = 19421711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19422253) 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 as a sum of consecutive naturals, namely, 9711111 + 9711112.

It is an arithmetic number, because the mean of its divisors is an integer number (9711112).

Almost surely, 2^19422223 is an apocalyptic number.

19422223 is a deficient number, since it is larger than the sum of its proper divisors (1).

19422223 is an equidigital number, since it uses as much as digits as its factorization.

19422223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 19422223 is about 4407.0651231857. The cubic root of 19422223 is about 268.8022989620.

The spelling of 19422223 in words is "nineteen million, four hundred twenty-two thousand, two hundred twenty-three".