118459391 has 2 divisors, whose sum is σ = 118459392. Its totient is φ = 118459390.

The previous prime is 118459351. The next prime is 118459457. The reversal of 118459391 is 193954811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118459391 - 2¹⁴ = 118443007 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 (118459301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59229695 + 59229696.

It is an arithmetic number, because the mean of its divisors is an integer number (59229696).

Almost surely, 2^118459391 is an apocalyptic number.

118459391 is a deficient number, since it is larger than the sum of its proper divisors (1).

118459391 is an equidigital number, since it uses as much as digits as its factorization.

118459391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 41.

The square root of 118459391 is about 10883.9051355660. The cubic root of 118459391 is about 491.1225008657.

The spelling of 118459391 in words is "one hundred eighteen million, four hundred fifty-nine thousand, three hundred ninety-one".