1673868729 has 8 divisors (see below), whose sum is σ = 2403503872. Its totient is φ = 1030073040.

The previous prime is 1673868689. The next prime is 1673868751. The reversal of 1673868729 is 9278683761.

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

It is not a de Polignac number, because 1673868729 - 2¹¹ = 1673866681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1673868029) 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, 21459817 + ... + 21459894.

It is an arithmetic number, because the mean of its divisors is an integer number (300437984).

Almost surely, 2^1673868729 is an apocalyptic number.

It is an amenable number.

1673868729 is a deficient number, since it is larger than the sum of its proper divisors (729635143).

1673868729 is a wasteful number, since it uses less digits than its factorization.

1673868729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42919727.

The product of its digits is 6096384, while the sum is 57.

The square root of 1673868729 is about 40912.9408500538. The cubic root of 1673868729 is about 1187.3364452715.

The spelling of 1673868729 in words is "one billion, six hundred seventy-three million, eight hundred sixty-eight thousand, seven hundred twenty-nine".