318428673 has 16 divisors (see below), whose sum is σ = 435468096. Its totient is φ = 206850560.

The previous prime is 318428641. The next prime is 318428731. The reversal of 318428673 is 376824813.

It is a cyclic number.

It is not a de Polignac number, because 318428673 - 2⁵ = 318428641 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (318428273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190186 + ... + 191852.

It is an arithmetic number, because the mean of its divisors is an integer number (27216756).

Almost surely, 2^318428673 is an apocalyptic number.

It is an amenable number.

318428673 is a deficient number, since it is larger than the sum of its proper divisors (117039423).

318428673 is a wasteful number, since it uses less digits than its factorization.

318428673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264.

The product of its digits is 193536, while the sum is 42.

The square root of 318428673 is about 17844.5698463146. The cubic root of 318428673 is about 682.8689864299.

The spelling of 318428673 in words is "three hundred eighteen million, four hundred twenty-eight thousand, six hundred seventy-three".