118516393 has 4 divisors (see below), whose sum is σ = 119226240. Its totient is φ = 117806548.

The previous prime is 118516369. The next prime is 118516397. The reversal of 118516393 is 393615811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 118516393 - 2²¹ = 116419241 is a prime.

It is a super-2 number, since 2×118516393² = 28092270819460898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118516397) 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, 354673 + ... + 355006.

It is an arithmetic number, because the mean of its divisors is an integer number (29806560).

Almost surely, 2^118516393 is an apocalyptic number.

It is an amenable number.

118516393 is a deficient number, since it is larger than the sum of its proper divisors (709847).

118516393 is an equidigital number, since it uses as much as digits as its factorization.

118516393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709846.

The product of its digits is 19440, while the sum is 37.

The square root of 118516393 is about 10886.5234579272. The cubic root of 118516393 is about 491.2012633722.

It can be divided in two parts, 1185 and 16393, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 118516393 in words is "one hundred eighteen million, five hundred sixteen thousand, three hundred ninety-three".