181830807 has 6 divisors (see below), whose sum is σ = 262644512. Its totient is φ = 121220532.

The previous prime is 181830797. The next prime is 181830811. The reversal of 181830807 is 708038181.

181830807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 181830807 - 2⁴ = 181830791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181830107) 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, 10101703 + ... + 10101720.

Almost surely, 2^181830807 is an apocalyptic number.

181830807 is a deficient number, since it is larger than the sum of its proper divisors (80813705).

181830807 is a wasteful number, since it uses less digits than its factorization.

181830807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20203429 (or 20203426 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 181830807 is about 13484.4653954096. The cubic root of 181830807 is about 566.5294473207.

Adding to 181830807 its reverse (708038181), we get a palindrome (889868988).

The spelling of 181830807 in words is "one hundred eighty-one million, eight hundred thirty thousand, eight hundred seven".