117117018 has 24 divisors (see below), whose sum is σ = 254880288. Its totient is φ = 38865672.

The previous prime is 117117017. The next prime is 117117023. The reversal of 117117018 is 810711711.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 117116982 and 117117000.

It is not an unprimeable number, because it can be changed into a prime (117117017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10246 + ... + 18417.

It is an arithmetic number, because the mean of its divisors is an integer number (10620012).

Almost surely, 2^117117018 is an apocalyptic number.

117117018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

117117018 is an abundant number, since it is smaller than the sum of its proper divisors (137763270).

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

117117018 is a wasteful number, since it uses less digits than its factorization.

117117018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28898 (or 28895 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 27.

The square root of 117117018 is about 10822.0616335336. The cubic root of 117117018 is about 489.2603278437.

Adding to 117117018 its reverse (810711711), we get a palindrome (927828729).

The spelling of 117117018 in words is "one hundred seventeen million, one hundred seventeen thousand, eighteen".