118108645 has 16 divisors (see below), whose sum is σ = 145015920. Its totient is φ = 92312064.

The previous prime is 118108643. The next prime is 118108651. The reversal of 118108645 is 546801811.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3896676 + 114211969 = 1974^2 + 10687^2 .

It is a cyclic number.

It is not a de Polignac number, because 118108645 - 2¹ = 118108643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118108645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118108643) 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 15 ways as a sum of consecutive naturals, for example, 72601 + ... + 74209.

It is an arithmetic number, because the mean of its divisors is an integer number (9063495).

Almost surely, 2^118108645 is an apocalyptic number.

It is an amenable number.

118108645 is a deficient number, since it is larger than the sum of its proper divisors (26907275).

118108645 is a wasteful number, since it uses less digits than its factorization.

118108645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 118108645 is about 10867.7801321153. The cubic root of 118108645 is about 490.6373007045.

The spelling of 118108645 in words is "one hundred eighteen million, one hundred eight thousand, six hundred forty-five".