1673866873 has 4 divisors (see below), whose sum is σ = 1912990720. Its totient is φ = 1434743028.

The previous prime is 1673866813. The next prime is 1673866907. The reversal of 1673866873 is 3786683761.

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 a cyclic number.

It is not a de Polignac number, because 1673866873 - 2⁹ = 1673866361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1673866813) 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, 119561913 + ... + 119561926.

It is an arithmetic number, because the mean of its divisors is an integer number (478247680).

Almost surely, 2^1673866873 is an apocalyptic number.

It is an amenable number.

1673866873 is a deficient number, since it is larger than the sum of its proper divisors (239123847).

1673866873 is an equidigital number, since it uses as much as digits as its factorization.

1673866873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239123846.

The product of its digits is 6096384, while the sum is 55.

The square root of 1673866873 is about 40912.9181677377. The cubic root of 1673866873 is about 1187.3360064283.

The spelling of 1673866873 in words is "one billion, six hundred seventy-three million, eight hundred sixty-six thousand, eight hundred seventy-three".