181087349 has 16 divisors (see below), whose sum is σ = 200931840. Its totient is φ = 162328320.

The previous prime is 181087289. The next prime is 181087391. The reversal of 181087349 is 943780181.

It is a cyclic number.

It is not a de Polignac number, because 181087349 - 2²⁰ = 180038773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181080349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105107 + ... + 106815.

It is an arithmetic number, because the mean of its divisors is an integer number (12558240).

Almost surely, 2^181087349 is an apocalyptic number.

It is an amenable number.

181087349 is a deficient number, since it is larger than the sum of its proper divisors (19844491).

181087349 is a wasteful number, since it uses less digits than its factorization.

181087349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 181087349 is about 13456.8699555283. The cubic root of 181087349 is about 565.7562629701.

The spelling of 181087349 in words is "one hundred eighty-one million, eighty-seven thousand, three hundred forty-nine".