181834040 has 32 divisors (see below), whose sum is σ = 433194480. Its totient is φ = 68454912.

The previous prime is 181834033. The next prime is 181834073. The reversal of 181834040 is 40438181.

It is a junction number, because it is equal to n+sod(n) for n = 181833994 and 181834012.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 133022 + ... + 134381.

Almost surely, 2^181834040 is an apocalyptic number.

181834040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181834040 is an abundant number, since it is smaller than the sum of its proper divisors (251360440).

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

181834040 is a wasteful number, since it uses less digits than its factorization.

181834040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267431 (or 267427 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 181834040 is about 13484.5852735633. The cubic root of 181834040 is about 566.5328049821.

The spelling of 181834040 in words is "one hundred eighty-one million, eight hundred thirty-four thousand, forty".