1703728641 has 4 divisors (see below), whose sum is σ = 2271638192. Its totient is φ = 1135819092.

The previous prime is 1703728639. The next prime is 1703728667. The reversal of 1703728641 is 1468273071.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1703728641 - 2¹ = 1703728639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1703728641.

It is not an unprimeable number, because it can be changed into a prime (1703728681) 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 in 3 ways as a sum of consecutive naturals, for example, 283954771 + ... + 283954776.

It is an arithmetic number, because the mean of its divisors is an integer number (567909548).

Almost surely, 2^1703728641 is an apocalyptic number.

It is an amenable number.

1703728641 is a deficient number, since it is larger than the sum of its proper divisors (567909551).

1703728641 is an equidigital number, since it uses as much as digits as its factorization.

1703728641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567909550.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 1703728641 is about 41276.2479036067. The cubic root of 1703728641 is about 1194.3551175837.

The spelling of 1703728641 in words is "one billion, seven hundred three million, seven hundred twenty-eight thousand, six hundred forty-one".