118984381 has 4 divisors (see below), whose sum is σ = 119161852. Its totient is φ = 118806912.

The previous prime is 118984357. The next prime is 118984387. The reversal of 118984381 is 183489811.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23921881 + 95062500 = 4891^2 + 9750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118984381 is a prime.

It is a super-2 number, since 2×118984381² = 28314565843906322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118984387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87726 + ... + 89071.

It is an arithmetic number, because the mean of its divisors is an integer number (29790463).

Almost surely, 2^118984381 is an apocalyptic number.

It is an amenable number.

118984381 is a deficient number, since it is larger than the sum of its proper divisors (177471).

118984381 is an equidigital number, since it uses as much as digits as its factorization.

118984381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177470.

The product of its digits is 55296, while the sum is 43.

The square root of 118984381 is about 10907.9961954522. The cubic root of 118984381 is about 491.8469529141.

The spelling of 118984381 in words is "one hundred eighteen million, nine hundred eighty-four thousand, three hundred eighty-one".