118506917 has 2 divisors, whose sum is σ = 118506918. Its totient is φ = 118506916.

The previous prime is 118506863. The next prime is 118506929. The reversal of 118506917 is 719605811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88190881 + 30316036 = 9391^2 + 5506^2 .

It is an emirp because it is prime and its reverse (719605811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118506917 - 2¹⁶ = 118441381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118506517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59253458 + 59253459.

It is an arithmetic number, because the mean of its divisors is an integer number (59253459).

Almost surely, 2^118506917 is an apocalyptic number.

It is an amenable number.

118506917 is a deficient number, since it is larger than the sum of its proper divisors (1).

118506917 is an equidigital number, since it uses as much as digits as its factorization.

118506917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 38.

The square root of 118506917 is about 10886.0882322348. The cubic root of 118506917 is about 491.1881716608.

The spelling of 118506917 in words is "one hundred eighteen million, five hundred six thousand, nine hundred seventeen".