618917339 has 2 divisors, whose sum is σ = 618917340. Its totient is φ = 618917338.

The previous prime is 618917329. The next prime is 618917347. The reversal of 618917339 is 933719816.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 618917339 - 2¹⁶ = 618851803 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 618917293 and 618917302.

It is not a weakly prime, because it can be changed into another prime (618917329) 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, 309458669 + 309458670.

It is an arithmetic number, because the mean of its divisors is an integer number (309458670).

Almost surely, 2^618917339 is an apocalyptic number.

618917339 is a deficient number, since it is larger than the sum of its proper divisors (1).

618917339 is an equidigital number, since it uses as much as digits as its factorization.

618917339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 47.

The square root of 618917339 is about 24878.0493407341. The cubic root of 618917339 is about 852.2052719966.

The spelling of 618917339 in words is "six hundred eighteen million, nine hundred seventeen thousand, three hundred thirty-nine".