618628279 has 2 divisors, whose sum is σ = 618628280. Its totient is φ = 618628278.

The previous prime is 618628247. The next prime is 618628289. The reversal of 618628279 is 972826816.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 618628279 - 2⁵ = 618628247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618628289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309314139 + 309314140.

It is an arithmetic number, because the mean of its divisors is an integer number (309314140).

Almost surely, 2^618628279 is an apocalyptic number.

618628279 is a deficient number, since it is larger than the sum of its proper divisors (1).

618628279 is an equidigital number, since it uses as much as digits as its factorization.

618628279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 49.

The square root of 618628279 is about 24872.2391231670. The cubic root of 618628279 is about 852.0725796318.

The spelling of 618628279 in words is "six hundred eighteen million, six hundred twenty-eight thousand, two hundred seventy-nine".