118842858209 has 2 divisors, whose sum is σ = 118842858210. Its totient is φ = 118842858208.

The previous prime is 118842858163. The next prime is 118842858223. The reversal of 118842858209 is 902858248811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88865398609 + 29977459600 = 298103^2 + 173140^2 .

It is an emirp because it is prime and its reverse (902858248811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118842858209 is a prime.

It is not a weakly prime, because it can be changed into another prime (118842858709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59421429104 + 59421429105.

It is an arithmetic number, because the mean of its divisors is an integer number (59421429105).

Almost surely, 2^118842858209 is an apocalyptic number.

It is an amenable number.

118842858209 is a deficient number, since it is larger than the sum of its proper divisors (1).

118842858209 is an equidigital number, since it uses as much as digits as its factorization.

118842858209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2949120, while the sum is 56.

The spelling of 118842858209 in words is "one hundred eighteen billion, eight hundred forty-two million, eight hundred fifty-eight thousand, two hundred nine".