918168047 has 2 divisors, whose sum is σ = 918168048. Its totient is φ = 918168046.

The previous prime is 918168037. The next prime is 918168049. The reversal of 918168047 is 740861819.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 918168047 - 2¹⁶ = 918102511 is a prime.

Together with 918168049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 918167989 and 918168007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918168049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459084023 + 459084024.

It is an arithmetic number, because the mean of its divisors is an integer number (459084024).

Almost surely, 2^918168047 is an apocalyptic number.

918168047 is a deficient number, since it is larger than the sum of its proper divisors (1).

918168047 is an equidigital number, since it uses as much as digits as its factorization.

918168047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 918168047 is about 30301.2878769203. The cubic root of 918168047 is about 971.9428403646.

The spelling of 918168047 in words is "nine hundred eighteen million, one hundred sixty-eight thousand, forty-seven".