618988122919 has 2 divisors, whose sum is σ = 618988122920. Its totient is φ = 618988122918.

The previous prime is 618988122869. The next prime is 618988122937. The reversal of 618988122919 is 919221889816.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 618988122919 - 2¹³ = 618988114727 is a prime.

It is a super-2 number, since 2×618988122919² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618988122979) 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, 309494061459 + 309494061460.

It is an arithmetic number, because the mean of its divisors is an integer number (309494061460).

Almost surely, 2^618988122919 is an apocalyptic number.

618988122919 is a deficient number, since it is larger than the sum of its proper divisors (1).

618988122919 is an equidigital number, since it uses as much as digits as its factorization.

618988122919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8957952, while the sum is 64.

The spelling of 618988122919 in words is "six hundred eighteen billion, nine hundred eighty-eight million, one hundred twenty-two thousand, nine hundred nineteen".