181008880 has 40 divisors (see below), whose sum is σ = 453220992. Its totient is φ = 66833664.

The previous prime is 181008859. The next prime is 181008929. The reversal of 181008880 is 88800181.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85984 + ... + 88063.

Almost surely, 2^181008880 is an apocalyptic number.

181008880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181008880 is an abundant number, since it is smaller than the sum of its proper divisors (272212112).

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

181008880 is a wasteful number, since it uses less digits than its factorization.

181008880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174073 (or 174067 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 34.

The square root of 181008880 is about 13453.9540656270. The cubic root of 181008880 is about 565.6745330898.

The spelling of 181008880 in words is "one hundred eighty-one million, eight thousand, eight hundred eighty".