181434 has 16 divisors (see below), whose sum is σ = 396000. Its totient is φ = 54960.

The previous prime is 181421. The next prime is 181439. The reversal of 181434 is 434181.

181434 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 181434.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 181434.

It is not an unprimeable number, because it can be changed into a prime (181439) by changing a digit.

181434 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1309 + ... + 1440.

It is an arithmetic number, because the mean of its divisors is an integer number (24750).

2¹⁸¹⁴³⁴ is an apocalyptic number.

181434 is an abundant number, since it is smaller than the sum of its proper divisors (214566).

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

181434 is a wasteful number, since it uses less digits than its factorization.

181434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765.

The product of its digits is 384, while the sum is 21.

The square root of 181434 is about 425.9507013728. The cubic root of 181434 is about 56.6117037233.

The spelling of 181434 in words is "one hundred eighty-one thousand, four hundred thirty-four".