117536181 has 16 divisors (see below), whose sum is σ = 189638784. Its totient is φ = 63212544.

The previous prime is 117536179. The next prime is 117536191. The reversal of 117536181 is 181635711.

It is not a de Polignac number, because 117536181 - 2¹ = 117536179 is a prime.

It is a super-2 number, since 2×117536181² = 27629507688129522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117536131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164260 + ... + 164973.

It is an arithmetic number, because the mean of its divisors is an integer number (11852424).

Almost surely, 2^117536181 is an apocalyptic number.

It is an amenable number.

117536181 is a deficient number, since it is larger than the sum of its proper divisors (72102603).

117536181 is a wasteful number, since it uses less digits than its factorization.

117536181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329260.

The product of its digits is 5040, while the sum is 33.

The square root of 117536181 is about 10841.4104709673. The cubic root of 117536181 is about 489.8433221135.

The spelling of 117536181 in words is "one hundred seventeen million, five hundred thirty-six thousand, one hundred eighty-one".