1728409063 has 2 divisors, whose sum is σ = 1728409064. Its totient is φ = 1728409062.

The previous prime is 1728409027. The next prime is 1728409069. The reversal of 1728409063 is 3609048271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1728409063 - 2²⁹ = 1191538151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1728409069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 864204531 + 864204532.

It is an arithmetic number, because the mean of its divisors is an integer number (864204532).

Almost surely, 2^1728409063 is an apocalyptic number.

1728409063 is a deficient number, since it is larger than the sum of its proper divisors (1).

1728409063 is an equidigital number, since it uses as much as digits as its factorization.

1728409063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1728409063 is about 41574.1393536896. The cubic root of 1728409063 is about 1200.0946830383.

The spelling of 1728409063 in words is "one billion, seven hundred twenty-eight million, four hundred nine thousand, sixty-three".