618306047 has 2 divisors, whose sum is σ = 618306048. Its totient is φ = 618306046.

The previous prime is 618306043. The next prime is 618306049. The reversal of 618306047 is 740603816.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 618306047 - 2² = 618306043 is a prime.

Together with 618306049, 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 = 618305998 and 618306016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618306043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309153023 + 309153024.

It is an arithmetic number, because the mean of its divisors is an integer number (309153024).

Almost surely, 2^618306047 is an apocalyptic number.

618306047 is a deficient number, since it is larger than the sum of its proper divisors (1).

618306047 is an equidigital number, since it uses as much as digits as its factorization.

618306047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 618306047 is about 24865.7605353225. The cubic root of 618306047 is about 851.9246110015.

The spelling of 618306047 in words is "six hundred eighteen million, three hundred six thousand, forty-seven".