117918012 has 12 divisors (see below), whose sum is σ = 275142056. Its totient is φ = 39306000.

The previous prime is 117917999. The next prime is 117918013. The reversal of 117918012 is 210819711.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117918013) 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 3 ways as a sum of consecutive naturals, for example, 4913239 + ... + 4913262.

Almost surely, 2^117918012 is an apocalyptic number.

117918012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117918012 is an abundant number, since it is smaller than the sum of its proper divisors (157224044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117918012 is a wasteful number, since it uses less digits than its factorization.

117918012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9826508 (or 9826506 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 30.

The square root of 117918012 is about 10859.0060318613. The cubic root of 117918012 is about 490.3731878694.

It can be divided in two parts, 1179 and 18012, that added together give a palindrome (19191).

The spelling of 117918012 in words is "one hundred seventeen million, nine hundred eighteen thousand, twelve".