118455915 has 32 divisors (see below), whose sum is σ = 202789440. Its totient is φ = 58834944.

The previous prime is 118455889. The next prime is 118455941. The reversal of 118455915 is 519554811.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (118455889) and next prime (118455941).

It is not a de Polignac number, because 118455915 - 2⁶ = 118455851 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22341 + ... + 27129.

It is an arithmetic number, because the mean of its divisors is an integer number (6337170).

Almost surely, 2^118455915 is an apocalyptic number.

118455915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

118455915 is a deficient number, since it is larger than the sum of its proper divisors (84333525).

118455915 is a wasteful number, since it uses less digits than its factorization.

118455915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4911.

The product of its digits is 36000, while the sum is 39.

The square root of 118455915 is about 10883.7454490630. The cubic root of 118455915 is about 491.1176970859.

The spelling of 118455915 in words is "one hundred eighteen million, four hundred fifty-five thousand, nine hundred fifteen".