118649915 has 8 divisors (see below), whose sum is σ = 143848320. Its totient is φ = 93940992.

The previous prime is 118649897. The next prime is 118649917. The reversal of 118649915 is 519946811.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118649915 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118649917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121835 + ... + 122804.

It is an arithmetic number, because the mean of its divisors is an integer number (17981040).

Almost surely, 2^118649915 is an apocalyptic number.

118649915 is a deficient number, since it is larger than the sum of its proper divisors (25198405).

118649915 is an equidigital number, since it uses as much as digits as its factorization.

118649915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244741.

The product of its digits is 77760, while the sum is 44.

The square root of 118649915 is about 10892.6541760950. The cubic root of 118649915 is about 491.3856585679.

The spelling of 118649915 in words is "one hundred eighteen million, six hundred forty-nine thousand, nine hundred fifteen".