118146815 has 4 divisors (see below), whose sum is σ = 141776184. Its totient is φ = 94517448.

The previous prime is 118146793. The next prime is 118146823. The reversal of 118146815 is 518641811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 518641811 = 31 ⋅16730381.

It is a cyclic number.

It is not a de Polignac number, because 118146815 - 2¹⁶ = 118081279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 11814677 + ... + 11814686.

It is an arithmetic number, because the mean of its divisors is an integer number (35444046).

Almost surely, 2^118146815 is an apocalyptic number.

118146815 is a deficient number, since it is larger than the sum of its proper divisors (23629369).

118146815 is an equidigital number, since it uses as much as digits as its factorization.

118146815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23629368.

The product of its digits is 7680, while the sum is 35.

The square root of 118146815 is about 10869.5360986566. The cubic root of 118146815 is about 490.6901492454.

The spelling of 118146815 in words is "one hundred eighteen million, one hundred forty-six thousand, eight hundred fifteen".