118458493 has 2 divisors, whose sum is σ = 118458494. Its totient is φ = 118458492.

The previous prime is 118458491. The next prime is 118458503. The reversal of 118458493 is 394854811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110607289 + 7851204 = 10517^2 + 2802^2 .

It is a cyclic number.

It is not a de Polignac number, because 118458493 - 2¹ = 118458491 is a prime.

Together with 118458491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118458491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59229246 + 59229247.

It is an arithmetic number, because the mean of its divisors is an integer number (59229247).

Almost surely, 2^118458493 is an apocalyptic number.

It is an amenable number.

118458493 is a deficient number, since it is larger than the sum of its proper divisors (1).

118458493 is an equidigital number, since it uses as much as digits as its factorization.

118458493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 43.

The square root of 118458493 is about 10883.8638819125. The cubic root of 118458493 is about 491.1212598522.

The spelling of 118458493 in words is "one hundred eighteen million, four hundred fifty-eight thousand, four hundred ninety-three".