118918945 has 12 divisors (see below), whose sum is σ = 147460500. Its totient is φ = 92062560.

The previous prime is 118918939. The next prime is 118918949. The reversal of 118918945 is 549819811.

It can be written as a sum of positive squares in 2 ways, for example, as 88811776 + 30107169 = 9424^2 + 5487^2 .

It is not a de Polignac number, because 118918945 - 2⁵ = 118918913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 118918895 and 118918904.

It is not an unprimeable number, because it can be changed into a prime (118918949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7570 + ... + 17179.

It is an arithmetic number, because the mean of its divisors is an integer number (12288375).

Almost surely, 2^118918945 is an apocalyptic number.

It is an amenable number.

118918945 is a deficient number, since it is larger than the sum of its proper divisors (28541555).

118918945 is an equidigital number, since it uses as much as digits as its factorization.

118918945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24816 (or 24785 counting only the distinct ones).

The product of its digits is 103680, while the sum is 46.

The square root of 118918945 is about 10904.9963319572. The cubic root of 118918945 is about 491.7567718928.

The spelling of 118918945 in words is "one hundred eighteen million, nine hundred eighteen thousand, nine hundred forty-five".