118680389 has 2 divisors, whose sum is σ = 118680390. Its totient is φ = 118680388.

The previous prime is 118680347. The next prime is 118680427. The reversal of 118680389 is 983086811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84364225 + 34316164 = 9185^2 + 5858^2 .

It is a cyclic number.

It is not a de Polignac number, because 118680389 - 2²⁴ = 101903173 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118680589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59340194 + 59340195.

It is an arithmetic number, because the mean of its divisors is an integer number (59340195).

Almost surely, 2^118680389 is an apocalyptic number.

It is an amenable number.

118680389 is a deficient number, since it is larger than the sum of its proper divisors (1).

118680389 is an equidigital number, since it uses as much as digits as its factorization.

118680389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 118680389 is about 10894.0529189095. The cubic root of 118680389 is about 491.4277240699.

The spelling of 118680389 in words is "one hundred eighteen million, six hundred eighty thousand, three hundred eighty-nine".