118428865 has 16 divisors (see below), whose sum is σ = 144735552. Its totient is φ = 93006144.

The previous prime is 118428841. The next prime is 118428883. The reversal of 118428865 is 568824811.

It is a cyclic number.

It is not a de Polignac number, because 118428865 - 2⁹ = 118428353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156067 + ... + 156823.

It is an arithmetic number, because the mean of its divisors is an integer number (9045972).

Almost surely, 2^118428865 is an apocalyptic number.

It is an amenable number.

118428865 is a deficient number, since it is larger than the sum of its proper divisors (26306687).

118428865 is an equidigital number, since it uses as much as digits as its factorization.

118428865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296.

The product of its digits is 122880, while the sum is 43.

The square root of 118428865 is about 10882.5026992875. The cubic root of 118428865 is about 491.0803111801.

The spelling of 118428865 in words is "one hundred eighteen million, four hundred twenty-eight thousand, eight hundred sixty-five".