117185916 has 48 divisors (see below), whose sum is σ = 277467008. Its totient is φ = 38491200.

The previous prime is 117185869. The next prime is 117185917. The reversal of 117185916 is 619581711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117185917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353871 + ... + 354201.

Almost surely, 2^117185916 is an apocalyptic number.

It is an amenable number.

117185916 is an abundant number, since it is smaller than the sum of its proper divisors (160281092).

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

117185916 is a wasteful number, since it uses less digits than its factorization.

117185916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 680 counting only the distinct ones).

The product of its digits is 15120, while the sum is 39.

The square root of 117185916 is about 10825.2443852321. The cubic root of 117185916 is about 489.3562502827.

The spelling of 117185916 in words is "one hundred seventeen million, one hundred eighty-five thousand, nine hundred sixteen".