1720083073 has 4 divisors (see below), whose sum is σ = 1720196820. Its totient is φ = 1719969328.

The previous prime is 1720083059. The next prime is 1720083097. The reversal of 1720083073 is 3703800271.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1347477264 + 372605809 = 36708^2 + 19303^2 .

It is a cyclic number.

It is not a de Polignac number, because 1720083073 - 2⁹ = 1720082561 is a prime.

It is a super-2 number, since 2×1720083073² = 5917371556042246658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1720083023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29938 + ... + 65851.

It is an arithmetic number, because the mean of its divisors is an integer number (430049205).

Almost surely, 2^1720083073 is an apocalyptic number.

It is an amenable number.

1720083073 is a deficient number, since it is larger than the sum of its proper divisors (113747).

1720083073 is an equidigital number, since it uses as much as digits as its factorization.

1720083073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113746.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 1720083073 is about 41473.8842285118. The cubic root of 1720083073 is about 1198.1645721109.

The spelling of 1720083073 in words is "one billion, seven hundred twenty million, eighty-three thousand, seventy-three".