318768851 has 2 divisors, whose sum is σ = 318768852. Its totient is φ = 318768850.

The previous prime is 318768823. The next prime is 318768979. The reversal of 318768851 is 158867813.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 318768851 - 2⁶ = 318768787 is a prime.

It is a super-2 number, since 2×318768851² = 203227160735720402, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 318768796 and 318768805.

It is not a weakly prime, because it can be changed into another prime (318768811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159384425 + 159384426.

It is an arithmetic number, because the mean of its divisors is an integer number (159384426).

Almost surely, 2^318768851 is an apocalyptic number.

318768851 is a deficient number, since it is larger than the sum of its proper divisors (1).

318768851 is an equidigital number, since it uses as much as digits as its factorization.

318768851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 47.

The square root of 318768851 is about 17854.0989971491. The cubic root of 318768851 is about 683.1120699979.

The spelling of 318768851 in words is "three hundred eighteen million, seven hundred sixty-eight thousand, eight hundred fifty-one".