117845816 has 16 divisors (see below), whose sum is σ = 241048440. Its totient is φ = 53566240.

The previous prime is 117845803. The next prime is 117845863. The reversal of 117845816 is 618548711.

It is a congruent number.

It is an unprimeable number.

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, 669491 + ... + 669666.

Almost surely, 2^117845816 is an apocalyptic number.

It is an amenable number.

117845816 is an abundant number, since it is smaller than the sum of its proper divisors (123202624).

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

117845816 is a wasteful number, since it uses less digits than its factorization.

117845816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339174 (or 1339170 counting only the distinct ones).

The product of its digits is 53760, while the sum is 41.

The square root of 117845816 is about 10855.6812775615. The cubic root of 117845816 is about 490.2730894769.

The spelling of 117845816 in words is "one hundred seventeen million, eight hundred forty-five thousand, eight hundred sixteen".