181349 has 6 divisors (see below), whose sum is σ = 211014. Its totient is φ = 155400.

The previous prime is 181303. The next prime is 181361. The reversal of 181349 is 943181.

It can be written as a sum of positive squares in only one way, i.e., 148225 + 33124 = 385^2 + 182^2 .

It is a de Polignac number, because none of the positive numbers 2^k-181349 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181399) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1802 + ... + 1899.

It is an arithmetic number, because the mean of its divisors is an integer number (35169).

2¹⁸¹³⁴⁹ is an apocalyptic number.

It is an amenable number.

181349 is a deficient number, since it is larger than the sum of its proper divisors (29665).

181349 is an equidigital number, since it uses as much as digits as its factorization.

181349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3715 (or 3708 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

The square root of 181349 is about 425.8509128791. The cubic root of 181349 is about 56.6028616715.

The spelling of 181349 in words is "one hundred eighty-one thousand, three hundred forty-nine".