1722673569 has 4 divisors (see below), whose sum is σ = 2296898096. Its totient is φ = 1148449044.

The previous prime is 1722673541. The next prime is 1722673583. The reversal of 1722673569 is 9653762271.

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 1722673569 - 2²³ = 1714284961 is a prime.

It is a super-2 number, since 2×1722673569² = 5935208450662395522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1722673669) 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 3 ways as a sum of consecutive naturals, for example, 287112259 + ... + 287112264.

It is an arithmetic number, because the mean of its divisors is an integer number (574224524).

Almost surely, 2^1722673569 is an apocalyptic number.

It is an amenable number.

1722673569 is a deficient number, since it is larger than the sum of its proper divisors (574224527).

1722673569 is an equidigital number, since it uses as much as digits as its factorization.

1722673569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574224526.

The product of its digits is 952560, while the sum is 48.

The square root of 1722673569 is about 41505.1029272305. The cubic root of 1722673569 is about 1198.7657608411.

The spelling of 1722673569 in words is "one billion, seven hundred twenty-two million, six hundred seventy-three thousand, five hundred sixty-nine".