118242589 has 2 divisors, whose sum is σ = 118242590. Its totient is φ = 118242588.

The previous prime is 118242581. The next prime is 118242611. The reversal of 118242589 is 985242811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97357689 + 20884900 = 9867^2 + 4570^2 .

It is a cyclic number.

It is not a de Polignac number, because 118242589 - 2³ = 118242581 is a prime.

It is equal to p_6747295 and since 118242589 and 6747295 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118242581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59121294 + 59121295.

It is an arithmetic number, because the mean of its divisors is an integer number (59121295).

Almost surely, 2^118242589 is an apocalyptic number.

It is an amenable number.

118242589 is a deficient number, since it is larger than the sum of its proper divisors (1).

118242589 is an equidigital number, since it uses as much as digits as its factorization.

118242589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 40.

The square root of 118242589 is about 10873.9408219835. The cubic root of 118242589 is about 490.8227037155.

The spelling of 118242589 in words is "one hundred eighteen million, two hundred forty-two thousand, five hundred eighty-nine".