1720160003 has 16 divisors (see below), whose sum is σ = 1892267520. Its totient is φ = 1557825696.

The previous prime is 1720159999. The next prime is 1720160017. The reversal of 1720160003 is 3000610271.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1720160003 - 2² = 1720159999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1720160063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16001 + ... + 60797.

It is an arithmetic number, because the mean of its divisors is an integer number (118266720).

Almost surely, 2^1720160003 is an apocalyptic number.

1720160003 is a deficient number, since it is larger than the sum of its proper divisors (172107517).

1720160003 is a wasteful number, since it uses less digits than its factorization.

1720160003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44906.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1720160003 is about 41474.8116692529. The cubic root of 1720160003 is about 1198.1824343154.

Adding to 1720160003 its reverse (3000610271), we get a palindrome (4720770274).

The spelling of 1720160003 in words is "one billion, seven hundred twenty million, one hundred sixty thousand, three".