19204223 has 2 divisors, whose sum is σ = 19204224. Its totient is φ = 19204222.

The previous prime is 19204219. The next prime is 19204267. The reversal of 19204223 is 32240291.

It is a weak prime.

It is an emirp because it is prime and its reverse (32240291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19204223 - 2² = 19204219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19204123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9602111 + 9602112.

It is an arithmetic number, because the mean of its divisors is an integer number (9602112).

Almost surely, 2^19204223 is an apocalyptic number.

19204223 is a deficient number, since it is larger than the sum of its proper divisors (1).

19204223 is an equidigital number, since it uses as much as digits as its factorization.

19204223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 19204223 is about 4382.2623152888. The cubic root of 19204223 is about 267.7928106447.

The spelling of 19204223 in words is "nineteen million, two hundred four thousand, two hundred twenty-three".