181112980 has 24 divisors (see below), whose sum is σ = 381009888. Its totient is φ = 72317088.

The previous prime is 181112933. The next prime is 181112989. The reversal of 181112980 is 89211181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181112989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4027 + ... + 19453.

It is an arithmetic number, because the mean of its divisors is an integer number (15875412).

Almost surely, 2^181112980 is an apocalyptic number.

181112980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181112980 is an abundant number, since it is smaller than the sum of its proper divisors (199896908).

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

181112980 is a wasteful number, since it uses less digits than its factorization.

181112980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16023 (or 16021 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 31.

The square root of 181112980 is about 13457.8222606780. The cubic root of 181112980 is about 565.7829539837.

The spelling of 181112980 in words is "one hundred eighty-one million, one hundred twelve thousand, nine hundred eighty".