118454389 has 2 divisors, whose sum is σ = 118454390. Its totient is φ = 118454388.

The previous prime is 118454387. The next prime is 118454423. The reversal of 118454389 is 983454811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80730225 + 37724164 = 8985^2 + 6142^2 .

It is a cyclic number.

It is not a de Polignac number, because 118454389 - 2¹ = 118454387 is a prime.

Together with 118454387, it forms a pair of twin primes.

It is equal to p_6758692 and since 118454389 and 6758692 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 (118454381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59227194 + 59227195.

It is an arithmetic number, because the mean of its divisors is an integer number (59227195).

Almost surely, 2^118454389 is an apocalyptic number.

It is an amenable number.

118454389 is a deficient number, since it is larger than the sum of its proper divisors (1).

118454389 is an equidigital number, since it uses as much as digits as its factorization.

118454389 is an evil number, because the sum of its binary digits is even.

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

The square root of 118454389 is about 10883.6753442943. The cubic root of 118454389 is about 491.1155881471.

The spelling of 118454389 in words is "one hundred eighteen million, four hundred fifty-four thousand, three hundred eighty-nine".