118563885 has 32 divisors (see below), whose sum is σ = 229944960. Its totient is φ = 57484800.

The previous prime is 118563877. The next prime is 118563889. The reversal of 118563885 is 588365811.

118563885 is a `hidden beast` number, since 1 + 1 + 8 + 5 + 638 + 8 + 5 = 666.

It is not a de Polignac number, because 118563885 - 2³ = 118563877 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 118563885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118563889) 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 31 ways as a sum of consecutive naturals, for example, 38436 + ... + 41405.

It is an arithmetic number, because the mean of its divisors is an integer number (7185780).

Almost surely, 2^118563885 is an apocalyptic number.

118563885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118563885 is a deficient number, since it is larger than the sum of its proper divisors (111381075).

118563885 is a wasteful number, since it uses less digits than its factorization.

118563885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79866 (or 79860 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The square root of 118563885 is about 10888.7044683929. The cubic root of 118563885 is about 491.2668661536.

The spelling of 118563885 in words is "one hundred eighteen million, five hundred sixty-three thousand, eight hundred eighty-five".