181360089 has 15 divisors (see below), whose sum is σ = 265933733. Its totient is φ = 119102148.

The previous prime is 181360001. The next prime is 181360093. The reversal of 181360089 is 980063181.

The square root of 181360089 is 13467.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 181360089 - 2¹¹ = 181358041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181360099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2706834 + ... + 2706900.

Almost surely, 2^181360089 is an apocalyptic number.

181360089 is the 13467-th square number.

181360089 is the 6734-th centered octagonal number.

It is an amenable number.

181360089 is a deficient number, since it is larger than the sum of its proper divisors (84573644).

181360089 is an frugal number, since it uses more digits than its factorization.

181360089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The cubic root of 181360089 is about 566.0401535190.

Multiplying 181360089 by its sum of digits (36), we get a square (6528963204 = 80802²).

The spelling of 181360089 in words is "one hundred eighty-one million, three hundred sixty thousand, eighty-nine".