1728472843 has 2 divisors, whose sum is σ = 1728472844. Its totient is φ = 1728472842.

The previous prime is 1728472831. The next prime is 1728472847. The reversal of 1728472843 is 3482748271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1728472843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1728472793 and 1728472802.

It is not a weakly prime, because it can be changed into another prime (1728472847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 864236421 + 864236422.

It is an arithmetic number, because the mean of its divisors is an integer number (864236422).

Almost surely, 2^1728472843 is an apocalyptic number.

1728472843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1728472843 is an equidigital number, since it uses as much as digits as its factorization.

1728472843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 602112, while the sum is 46.

The square root of 1728472843 is about 41574.9064099969. The cubic root of 1728472843 is about 1200.1094444161.

The spelling of 1728472843 in words is "one billion, seven hundred twenty-eight million, four hundred seventy-two thousand, eight hundred forty-three".