1722940289 has 8 divisors (see below), whose sum is σ = 2032593408. Its totient is φ = 1429166880.

The previous prime is 1722940283. The next prime is 1722940291. The reversal of 1722940289 is 9820492271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1722940289 - 2⁸ = 1722940033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1722940283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3969692 + ... + 3970125.

It is an arithmetic number, because the mean of its divisors is an integer number (254074176).

Almost surely, 2^1722940289 is an apocalyptic number.

It is an amenable number.

1722940289 is a deficient number, since it is larger than the sum of its proper divisors (309653119).

1722940289 is an equidigital number, since it uses as much as digits as its factorization.

1722940289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7939855.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1722940289 is about 41508.3159017564. The cubic root of 1722940289 is about 1198.8276255901.

The spelling of 1722940289 in words is "one billion, seven hundred twenty-two million, nine hundred forty thousand, two hundred eighty-nine".