118772181 has 12 divisors (see below), whose sum is σ = 187156320. Its totient is φ = 71983080.

The previous prime is 118772167. The next prime is 118772189. The reversal of 118772181 is 181277811.

It is not a de Polignac number, because 118772181 - 2⁶ = 118772117 is a prime.

It is a super-2 number, since 2×118772181² = 28213661958993522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118772189) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 599761 + ... + 599958.

It is an arithmetic number, because the mean of its divisors is an integer number (15596360).

Almost surely, 2^118772181 is an apocalyptic number.

118772181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

118772181 is a deficient number, since it is larger than the sum of its proper divisors (68384139).

118772181 is a wasteful number, since it uses less digits than its factorization.

118772181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199736 (or 1199733 counting only the distinct ones).

The product of its digits is 6272, while the sum is 36.

The square root of 118772181 is about 10898.2650454098. The cubic root of 118772181 is about 491.5543878187.

The spelling of 118772181 in words is "one hundred eighteen million, seven hundred seventy-two thousand, one hundred eighty-one".