181395 has 24 divisors (see below), whose sum is σ = 327600. Its totient is φ = 92736.

The previous prime is 181387. The next prime is 181397. The reversal of 181395 is 593181.

181395 is nontrivially palindromic in base 13.

It is not a de Polignac number, because 181395 - 2³ = 181387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1236 + ... + 1374.

It is an arithmetic number, because the mean of its divisors is an integer number (13650).

2¹⁸¹³⁹⁵ is an apocalyptic number.

181395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

181395 is a deficient number, since it is larger than the sum of its proper divisors (146205).

181395 is a wasteful number, since it uses less digits than its factorization.

181395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 176 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 181395 is about 425.9049189667. The cubic root of 181395 is about 56.6076471249.

It can be divided in two parts, 181 and 395, that added together give a square (576 = 24²).

The spelling of 181395 in words is "one hundred eighty-one thousand, three hundred ninety-five".