118823565 has 16 divisors (see below), whose sum is σ = 217277568. Its totient is φ = 54319296.

The previous prime is 118823563. The next prime is 118823569. The reversal of 118823565 is 565328811.

It is not a de Polignac number, because 118823565 - 2¹ = 118823563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118823563) 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, 565722 + ... + 565931.

It is an arithmetic number, because the mean of its divisors is an integer number (13579848).

Almost surely, 2^118823565 is an apocalyptic number.

118823565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118823565 is a deficient number, since it is larger than the sum of its proper divisors (98454003).

118823565 is a wasteful number, since it uses less digits than its factorization.

118823565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131668.

The product of its digits is 57600, while the sum is 39.

The square root of 118823565 is about 10900.6222299463. The cubic root of 118823565 is about 491.6252640932.

It can be divided in two parts, 1188 and 23565, that added together give a triangular number (24753 = T₂₂₂).

The spelling of 118823565 in words is "one hundred eighteen million, eight hundred twenty-three thousand, five hundred sixty-five".