178730013 has 16 divisors (see below), whose sum is σ = 297110016. Its totient is φ = 92846640.

The previous prime is 178730011. The next prime is 178730047. The reversal of 178730013 is 310037871.

178730013 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 178730013 - 2¹ = 178730011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (178730011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386631 + ... + 387092.

It is an arithmetic number, because the mean of its divisors is an integer number (18569376).

Almost surely, 2^178730013 is an apocalyptic number.

It is an amenable number.

178730013 is a deficient number, since it is larger than the sum of its proper divisors (118380003).

178730013 is a wasteful number, since it uses less digits than its factorization.

178730013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773744.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 178730013 is about 13368.9944648055. The cubic root of 178730013 is about 563.2905892508.

Adding to 178730013 its reverse (310037871), we get a palindrome (488767884).

The spelling of 178730013 in words is "one hundred seventy-eight million, seven hundred thirty thousand, thirteen".