118419493 has 2 divisors, whose sum is σ = 118419494. Its totient is φ = 118419492.

The previous prime is 118419491. The next prime is 118419517. The reversal of 118419493 is 394914811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67125249 + 51294244 = 8193^2 + 7162^2 .

It is a cyclic number.

It is not a de Polignac number, because 118419493 - 2¹ = 118419491 is a prime.

Together with 118419491, 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 (118419491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59209746 + 59209747.

It is an arithmetic number, because the mean of its divisors is an integer number (59209747).

Almost surely, 2^118419493 is an apocalyptic number.

It is an amenable number.

118419493 is a deficient number, since it is larger than the sum of its proper divisors (1).

118419493 is an equidigital number, since it uses as much as digits as its factorization.

118419493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 118419493 is about 10882.0720912885. The cubic root of 118419493 is about 491.0673567761.

The spelling of 118419493 in words is "one hundred eighteen million, four hundred nineteen thousand, four hundred ninety-three".