118387543 has 4 divisors (see below), whose sum is σ = 122206528. Its totient is φ = 114568560.

The previous prime is 118387517. The next prime is 118387553. The reversal of 118387543 is 345783811.

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

It is a de Polignac number, because none of the positive numbers 2^k-118387543 is a prime.

It is a super-3 number, since 3×118387543³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118387496 and 118387505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118387553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1909446 + ... + 1909507.

It is an arithmetic number, because the mean of its divisors is an integer number (30551632).

Almost surely, 2^118387543 is an apocalyptic number.

118387543 is a deficient number, since it is larger than the sum of its proper divisors (3818985).

118387543 is an equidigital number, since it uses as much as digits as its factorization.

118387543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3818984.

The product of its digits is 80640, while the sum is 40.

The square root of 118387543 is about 10880.6039813974. The cubic root of 118387543 is about 491.0231888977.

The spelling of 118387543 in words is "one hundred eighteen million, three hundred eighty-seven thousand, five hundred forty-three".