428019563 has 2 divisors, whose sum is σ = 428019564. Its totient is φ = 428019562.

The previous prime is 428019547. The next prime is 428019583. The reversal of 428019563 is 365910824.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428019563 - 2⁴ = 428019547 is a prime.

It is not a weakly prime, because it can be changed into another prime (428019583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214009781 + 214009782.

It is an arithmetic number, because the mean of its divisors is an integer number (214009782).

Almost surely, 2^428019563 is an apocalyptic number.

428019563 is a deficient number, since it is larger than the sum of its proper divisors (1).

428019563 is an equidigital number, since it uses as much as digits as its factorization.

428019563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 428019563 is about 20688.6336668229. The cubic root of 428019563 is about 753.6236861858.

The spelling of 428019563 in words is "four hundred twenty-eight million, nineteen thousand, five hundred sixty-three".