118381516789 has 2 divisors, whose sum is σ = 118381516790. Its totient is φ = 118381516788.

The previous prime is 118381516769. The next prime is 118381516811. The reversal of 118381516789 is 987615183811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59223116164 + 59158400625 = 243358^2 + 243225^2 .

It is an emirp because it is prime and its reverse (987615183811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118381516789 - 2¹⁵ = 118381484021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118381516769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59190758394 + 59190758395.

It is an arithmetic number, because the mean of its divisors is an integer number (59190758395).

Almost surely, 2^118381516789 is an apocalyptic number.

It is an amenable number.

118381516789 is a deficient number, since it is larger than the sum of its proper divisors (1).

118381516789 is an equidigital number, since it uses as much as digits as its factorization.

118381516789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 58.

The spelling of 118381516789 in words is "one hundred eighteen billion, three hundred eighty-one million, five hundred sixteen thousand, seven hundred eighty-nine".