19424227 has 2 divisors, whose sum is σ = 19424228. Its totient is φ = 19424226.

The previous prime is 19424203. The next prime is 19424233. The reversal of 19424227 is 72242491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19424227 - 2¹⁹ = 18899939 is a prime.

It is not a weakly prime, because it can be changed into another prime (19424257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9712113 + 9712114.

It is an arithmetic number, because the mean of its divisors is an integer number (9712114).

Almost surely, 2^19424227 is an apocalyptic number.

19424227 is a deficient number, since it is larger than the sum of its proper divisors (1).

19424227 is an equidigital number, since it uses as much as digits as its factorization.

19424227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 19424227 is about 4407.2924795162. The cubic root of 19424227 is about 268.8115437205.

The spelling of 19424227 in words is "nineteen million, four hundred twenty-four thousand, two hundred twenty-seven".