118378515 has 8 divisors (see below), whose sum is σ = 189405648. Its totient is φ = 63135200.

The previous prime is 118378489. The next prime is 118378523. The reversal of 118378515 is 515873811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 118378515 - 2⁵ = 118378483 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3945936 + ... + 3945965.

It is an arithmetic number, because the mean of its divisors is an integer number (23675706).

Almost surely, 2^118378515 is an apocalyptic number.

118378515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

118378515 is a deficient number, since it is larger than the sum of its proper divisors (71027133).

118378515 is an equidigital number, since it uses as much as digits as its factorization.

118378515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7891909.

The product of its digits is 33600, while the sum is 39.

The square root of 118378515 is about 10880.1891068124. The cubic root of 118378515 is about 491.0107070945.

The spelling of 118378515 in words is "one hundred eighteen million, three hundred seventy-eight thousand, five hundred fifteen".