19120447 has 2 divisors, whose sum is σ = 19120448. Its totient is φ = 19120446.

The previous prime is 19120421. The next prime is 19120457. The reversal of 19120447 is 74402191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19120447 - 2¹⁹ = 18596159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19120457) 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 as a sum of consecutive naturals, namely, 9560223 + 9560224.

It is an arithmetic number, because the mean of its divisors is an integer number (9560224).

Almost surely, 2^19120447 is an apocalyptic number.

19120447 is a deficient number, since it is larger than the sum of its proper divisors (1).

19120447 is an equidigital number, since it uses as much as digits as its factorization.

19120447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 19120447 is about 4372.6933347766. The cubic root of 19120447 is about 267.4028389092.

The spelling of 19120447 in words is "nineteen million, one hundred twenty thousand, four hundred forty-seven".