118908518389 has 2 divisors, whose sum is σ = 118908518390. Its totient is φ = 118908518388.

The previous prime is 118908518381. The next prime is 118908518411. The reversal of 118908518389 is 983815809811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77182285489 + 41726232900 = 277817^2 + 204270^2 .

It is an emirp because it is prime and its reverse (983815809811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118908518389 - 2³ = 118908518381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118908518381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59454259194 + 59454259195.

It is an arithmetic number, because the mean of its divisors is an integer number (59454259195).

Almost surely, 2^118908518389 is an apocalyptic number.

It is an amenable number.

118908518389 is a deficient number, since it is larger than the sum of its proper divisors (1).

118908518389 is an equidigital number, since it uses as much as digits as its factorization.

118908518389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 61.

The spelling of 118908518389 in words is "one hundred eighteen billion, nine hundred eight million, five hundred eighteen thousand, three hundred eighty-nine".