118513845 has 12 divisors (see below), whose sum is σ = 205424076. Its totient is φ = 63207360.

The previous prime is 118513841. The next prime is 118513861. The reversal of 118513845 is 548315811.

It can be written as a sum of positive squares in 2 ways, for example, as 21511044 + 97002801 = 4638^2 + 9849^2 .

It is not a de Polignac number, because 118513845 - 2² = 118513841 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118513841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1316776 + ... + 1316865.

It is an arithmetic number, because the mean of its divisors is an integer number (17118673).

Almost surely, 2^118513845 is an apocalyptic number.

118513845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118513845 is a deficient number, since it is larger than the sum of its proper divisors (86910231).

118513845 is a wasteful number, since it uses less digits than its factorization.

118513845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633652 (or 2633649 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 118513845 is about 10886.4064318764. The cubic root of 118513845 is about 491.1977432128.

The spelling of 118513845 in words is "one hundred eighteen million, five hundred thirteen thousand, eight hundred forty-five".