118243589 has 2 divisors, whose sum is σ = 118243590. Its totient is φ = 118243588.

The previous prime is 118243571. The next prime is 118243603. The reversal of 118243589 is 985342811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118048225 + 195364 = 10865^2 + 442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118243589 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 (118242589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59121794 + 59121795.

It is an arithmetic number, because the mean of its divisors is an integer number (59121795).

Almost surely, 2^118243589 is an apocalyptic number.

It is an amenable number.

118243589 is a deficient number, since it is larger than the sum of its proper divisors (1).

118243589 is an equidigital number, since it uses as much as digits as its factorization.

118243589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 41.

The square root of 118243589 is about 10873.9868033762. The cubic root of 118243589 is about 490.8240873719.

The spelling of 118243589 in words is "one hundred eighteen million, two hundred forty-three thousand, five hundred eighty-nine".