673868181 has 8 divisors (see below), whose sum is σ = 1026846784. Its totient is φ = 385067520.

The previous prime is 673868147. The next prime is 673868189. The reversal of 673868181 is 181868376.

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

It is not a de Polignac number, because 673868181 - 2⁹ = 673867669 is a prime.

It is a super-2 number, since 2×673868181² = 908196650728497522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 673868181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673868189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16044460 + ... + 16044501.

It is an arithmetic number, because the mean of its divisors is an integer number (128355848).

Almost surely, 2^673868181 is an apocalyptic number.

It is an amenable number.

673868181 is a deficient number, since it is larger than the sum of its proper divisors (352978603).

673868181 is a wasteful number, since it uses less digits than its factorization.

673868181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32088971.

The product of its digits is 387072, while the sum is 48.

The square root of 673868181 is about 25958.9711082701. The cubic root of 673868181 is about 876.7147569765.

The spelling of 673868181 in words is "six hundred seventy-three million, eight hundred sixty-eight thousand, one hundred eighty-one".