118013181 has 32 divisors (see below), whose sum is σ = 185794560. Its totient is φ = 65688000.

The previous prime is 118013179. The next prime is 118013191. The reversal of 118013181 is 181310811.

It is not a de Polignac number, because 118013181 - 2¹ = 118013179 is a prime.

It is a super-3 number, since 3×118013181³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118013111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101956 + ... + 103106.

It is an arithmetic number, because the mean of its divisors is an integer number (5806080).

Almost surely, 2^118013181 is an apocalyptic number.

118013181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

118013181 is a deficient number, since it is larger than the sum of its proper divisors (67781379).

118013181 is a wasteful number, since it uses less digits than its factorization.

118013181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417.

The product of its (nonzero) digits is 192, while the sum is 24.

The square root of 118013181 is about 10863.3871789603. The cubic root of 118013181 is about 490.5050754857.

Adding to 118013181 its reverse (181310811), we get a palindrome (299323992).

The spelling of 118013181 in words is "one hundred eighteen million, thirteen thousand, one hundred eighty-one".