1729664673 has 8 divisors (see below), whose sum is σ = 2515875936. Its totient is φ = 1048281600.

The previous prime is 1729664669. The next prime is 1729664731. The reversal of 1729664673 is 3764669271.

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

It is not a de Polignac number, because 1729664673 - 2² = 1729664669 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1729664173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26207008 + ... + 26207073.

It is an arithmetic number, because the mean of its divisors is an integer number (314484492).

Almost surely, 2^1729664673 is an apocalyptic number.

It is an amenable number.

1729664673 is a deficient number, since it is larger than the sum of its proper divisors (786211263).

1729664673 is a wasteful number, since it uses less digits than its factorization.

1729664673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52414095.

The product of its digits is 2286144, while the sum is 51.

The square root of 1729664673 is about 41589.2374659599. The cubic root of 1729664673 is about 1200.3852172987.

The spelling of 1729664673 in words is "one billion, seven hundred twenty-nine million, six hundred sixty-four thousand, six hundred seventy-three".