1728614873 has 2 divisors, whose sum is σ = 1728614874. Its totient is φ = 1728614872.

The previous prime is 1728614843. The next prime is 1728614903. The reversal of 1728614873 is 3784168271.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1728614843) and next prime (1728614903).

It can be written as a sum of positive squares in only one way, i.e., 1025728729 + 702886144 = 32027^2 + 26512^2 .

It is a cyclic number.

It is not a de Polignac number, because 1728614873 - 2¹⁰ = 1728613849 is a prime.

It is a super-2 number, since 2×1728614873² = 5976218758313612258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1728614843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 864307436 + 864307437.

It is an arithmetic number, because the mean of its divisors is an integer number (864307437).

Almost surely, 2^1728614873 is an apocalyptic number.

It is an amenable number.

1728614873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1728614873 is an equidigital number, since it uses as much as digits as its factorization.

1728614873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 47.

The square root of 1728614873 is about 41576.6144966134. The cubic root of 1728614873 is about 1200.1423148344.

The spelling of 1728614873 in words is "one billion, seven hundred twenty-eight million, six hundred fourteen thousand, eight hundred seventy-three".